Home / 28,006.24-38,649.54-15,431.26

Finding the Fourth Proportional to 28,006.24, 38,649.54 and 15,431.26

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Solution

The fourth proportional to 28,006.24, 38,649.54 and 15,431.26 is: 21,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.24 : 38,649.54 = 15,431.26 : x
  2. Step 2: Convert to fraction form
    28,006.24/38,649.54 = 15,431.26/x
  3. Step 3: Cross multiply
    28,006.24x = 38,649.54 × 15,431.26
  4. Step 4: Simplify right side
    28,006.24x = 596,411,100.62
  5. Step 5: Solve for x
    x = 596,411,100.62/28,006.24
  6. Step 6: Final answer
    x = 21,295.65

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.