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Finding the Fourth Proportional to 14,614.76, 20,184.70 and 9,890.84

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Solution

The fourth proportional to 14,614.76, 20,184.70 and 9,890.84 is: 13,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,614.76 : 20,184.70 = 9,890.84 : x
  2. Step 2: Convert to fraction form
    14,614.76/20,184.70 = 9,890.84/x
  3. Step 3: Cross multiply
    14,614.76x = 20,184.70 × 9,890.84
  4. Step 4: Simplify right side
    14,614.76x = 199,643,638.15
  5. Step 5: Solve for x
    x = 199,643,638.15/14,614.76
  6. Step 6: Final answer
    x = 13,660.41

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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.