Home / 15,704.59-21,672.38-8,631.47

Finding the Fourth Proportional to 15,704.59, 21,672.38 and 8,631.47

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Solution

The fourth proportional to 15,704.59, 21,672.38 and 8,631.47 is: 11,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.59 : 21,672.38 = 8,631.47 : x
  2. Step 2: Convert to fraction form
    15,704.59/21,672.38 = 8,631.47/x
  3. Step 3: Cross multiply
    15,704.59x = 21,672.38 × 8,631.47
  4. Step 4: Simplify right side
    15,704.59x = 187,064,497.80
  5. Step 5: Solve for x
    x = 187,064,497.80/15,704.59
  6. Step 6: Final answer
    x = 11,911.45

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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.