Home / 15,021.48-20,729.78-8,306.76

Finding the Fourth Proportional to 15,021.48, 20,729.78 and 8,306.76

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Solution

The fourth proportional to 15,021.48, 20,729.78 and 8,306.76 is: 11,463.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.48 : 20,729.78 = 8,306.76 : x
  2. Step 2: Convert to fraction form
    15,021.48/20,729.78 = 8,306.76/x
  3. Step 3: Cross multiply
    15,021.48x = 20,729.78 × 8,306.76
  4. Step 4: Simplify right side
    15,021.48x = 172,197,307.31
  5. Step 5: Solve for x
    x = 172,197,307.31/15,021.48
  6. Step 6: Final answer
    x = 11,463.40

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Double scale
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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.