Home / 12,455,715.10-18,683,572.65-7,647,814.30

Finding the Fourth Proportional to 12,455,715.10, 18,683,572.65 and 7,647,814.30

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Solution

The fourth proportional to 12,455,715.10, 18,683,572.65 and 7,647,814.30 is: 11,471,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,715.10 : 18,683,572.65 = 7,647,814.30 : x
  2. Step 2: Convert to fraction form
    12,455,715.10/18,683,572.65 = 7,647,814.30/x
  3. Step 3: Cross multiply
    12,455,715.10x = 18,683,572.65 × 7,647,814.30
  4. Step 4: Simplify right side
    12,455,715.10x = 142,888,494,087,758.88
  5. Step 5: Solve for x
    x = 142,888,494,087,758.88/12,455,715.10
  6. Step 6: Final answer
    x = 11,471,721.45

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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.