Home / 20,924.83-28,882.67-12,428.34

Finding the Fourth Proportional to 20,924.83, 28,882.67 and 12,428.34

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Solution

The fourth proportional to 20,924.83, 28,882.67 and 12,428.34 is: 17,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.83 : 28,882.67 = 12,428.34 : x
  2. Step 2: Convert to fraction form
    20,924.83/28,882.67 = 12,428.34/x
  3. Step 3: Cross multiply
    20,924.83x = 28,882.67 × 12,428.34
  4. Step 4: Simplify right side
    20,924.83x = 358,963,472.42
  5. Step 5: Solve for x
    x = 358,963,472.42/20,924.83
  6. Step 6: Final answer
    x = 17,154.90

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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.