Home / 28,145.19-38,841.59-15,569.94

Finding the Fourth Proportional to 28,145.19, 38,841.59 and 15,569.94

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Solution

The fourth proportional to 28,145.19, 38,841.59 and 15,569.94 is: 21,487.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.19 : 38,841.59 = 15,569.94 : x
  2. Step 2: Convert to fraction form
    28,145.19/38,841.59 = 15,569.94/x
  3. Step 3: Cross multiply
    28,145.19x = 38,841.59 × 15,569.94
  4. Step 4: Simplify right side
    28,145.19x = 604,761,147.95
  5. Step 5: Solve for x
    x = 604,761,147.95/28,145.19
  6. Step 6: Final answer
    x = 21,487.19

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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.