Home / 42,578.88-63,868.32-12,996.88

Finding the Fourth Proportional to 42,578.88, 63,868.32 and 12,996.88

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Solution

The fourth proportional to 42,578.88, 63,868.32 and 12,996.88 is: 19,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,578.88 : 63,868.32 = 12,996.88 : x
  2. Step 2: Convert to fraction form
    42,578.88/63,868.32 = 12,996.88/x
  3. Step 3: Cross multiply
    42,578.88x = 63,868.32 × 12,996.88
  4. Step 4: Simplify right side
    42,578.88x = 830,088,890.84
  5. Step 5: Solve for x
    x = 830,088,890.84/42,578.88
  6. Step 6: Final answer
    x = 19,495.32

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Double scale
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Similar ratio
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1.5x scale

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.