Home / 15,462.28-21,337.78-8,747.80

Finding the Fourth Proportional to 15,462.28, 21,337.78 and 8,747.80

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Solution

The fourth proportional to 15,462.28, 21,337.78 and 8,747.80 is: 12,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.28 : 21,337.78 = 8,747.80 : x
  2. Step 2: Convert to fraction form
    15,462.28/21,337.78 = 8,747.80/x
  3. Step 3: Cross multiply
    15,462.28x = 21,337.78 × 8,747.80
  4. Step 4: Simplify right side
    15,462.28x = 186,658,631.88
  5. Step 5: Solve for x
    x = 186,658,631.88/15,462.28
  6. Step 6: Final answer
    x = 12,071.87

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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.