Home / 28,153.38-38,852.15-15,407.69

Finding the Fourth Proportional to 28,153.38, 38,852.15 and 15,407.69

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Solution

The fourth proportional to 28,153.38, 38,852.15 and 15,407.69 is: 21,262.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.38 : 38,852.15 = 15,407.69 : x
  2. Step 2: Convert to fraction form
    28,153.38/38,852.15 = 15,407.69/x
  3. Step 3: Cross multiply
    28,153.38x = 38,852.15 × 15,407.69
  4. Step 4: Simplify right side
    28,153.38x = 598,621,806.00
  5. Step 5: Solve for x
    x = 598,621,806.00/28,153.38
  6. Step 6: Final answer
    x = 21,262.88

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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.