Home / 28,424.90-42,646.26-11,792.78

Finding the Fourth Proportional to 28,424.90, 42,646.26 and 11,792.78

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Solution

The fourth proportional to 28,424.90, 42,646.26 and 11,792.78 is: 17,692.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.90 : 42,646.26 = 11,792.78 : x
  2. Step 2: Convert to fraction form
    28,424.90/42,646.26 = 11,792.78/x
  3. Step 3: Cross multiply
    28,424.90x = 42,646.26 × 11,792.78
  4. Step 4: Simplify right side
    28,424.90x = 502,917,962.00
  5. Step 5: Solve for x
    x = 502,917,962.00/28,424.90
  6. Step 6: Final answer
    x = 17,692.87

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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.