Home / 20,929.59-28,872.86-15,252.17

Finding the Fourth Proportional to 20,929.59, 28,872.86 and 15,252.17

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Solution

The fourth proportional to 20,929.59, 28,872.86 and 15,252.17 is: 21,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.59 : 28,872.86 = 15,252.17 : x
  2. Step 2: Convert to fraction form
    20,929.59/28,872.86 = 15,252.17/x
  3. Step 3: Cross multiply
    20,929.59x = 28,872.86 × 15,252.17
  4. Step 4: Simplify right side
    20,929.59x = 440,373,548.48
  5. Step 5: Solve for x
    x = 440,373,548.48/20,929.59
  6. Step 6: Final answer
    x = 21,040.72

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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.