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Finding the Fourth Proportional to 14,000.64, 19,321.02 and 7,713.15

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Solution

The fourth proportional to 14,000.64, 19,321.02 and 7,713.15 is: 10,644.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.64 : 19,321.02 = 7,713.15 : x
  2. Step 2: Convert to fraction form
    14,000.64/19,321.02 = 7,713.15/x
  3. Step 3: Cross multiply
    14,000.64x = 19,321.02 × 7,713.15
  4. Step 4: Simplify right side
    14,000.64x = 149,025,925.41
  5. Step 5: Solve for x
    x = 149,025,925.41/14,000.64
  6. Step 6: Final answer
    x = 10,644.22

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Double scale
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Similar ratio
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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.