Home / 12,482,029.10-18,723,043.65-7,674,128.30

Finding the Fourth Proportional to 12,482,029.10, 18,723,043.65 and 7,674,128.30

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Solution

The fourth proportional to 12,482,029.10, 18,723,043.65 and 7,674,128.30 is: 11,511,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,482,029.10 : 18,723,043.65 = 7,674,128.30 : x
  2. Step 2: Convert to fraction form
    12,482,029.10/18,723,043.65 = 7,674,128.30/x
  3. Step 3: Cross multiply
    12,482,029.10x = 18,723,043.65 × 7,674,128.30
  4. Step 4: Simplify right side
    12,482,029.10x = 143,683,039,136,600.28
  5. Step 5: Solve for x
    x = 143,683,039,136,600.28/12,482,029.10
  6. Step 6: Final answer
    x = 11,511,192.45

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.