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Finding the Fourth Proportional to 10,807.78, 14,915.04 and 6,331.72

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Solution

The fourth proportional to 10,807.78, 14,915.04 and 6,331.72 is: 8,737.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,807.78 : 14,915.04 = 6,331.72 : x
  2. Step 2: Convert to fraction form
    10,807.78/14,915.04 = 6,331.72/x
  3. Step 3: Cross multiply
    10,807.78x = 14,915.04 × 6,331.72
  4. Step 4: Simplify right side
    10,807.78x = 94,437,824.00
  5. Step 5: Solve for x
    x = 94,437,824.00/10,807.78
  6. Step 6: Final answer
    x = 8,737.95

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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.