Home / 15,306.72-21,123.27-8,937.69

Finding the Fourth Proportional to 15,306.72, 21,123.27 and 8,937.69

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Solution

The fourth proportional to 15,306.72, 21,123.27 and 8,937.69 is: 12,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.72 : 21,123.27 = 8,937.69 : x
  2. Step 2: Convert to fraction form
    15,306.72/21,123.27 = 8,937.69/x
  3. Step 3: Cross multiply
    15,306.72x = 21,123.27 × 8,937.69
  4. Step 4: Simplify right side
    15,306.72x = 188,793,239.05
  5. Step 5: Solve for x
    x = 188,793,239.05/15,306.72
  6. Step 6: Final answer
    x = 12,334.01

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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.