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Finding the Fourth Proportional to 13,673.92, 20,510.88 and 9,785.92

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Solution

The fourth proportional to 13,673.92, 20,510.88 and 9,785.92 is: 14,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.92 : 20,510.88 = 9,785.92 : x
  2. Step 2: Convert to fraction form
    13,673.92/20,510.88 = 9,785.92/x
  3. Step 3: Cross multiply
    13,673.92x = 20,510.88 × 9,785.92
  4. Step 4: Simplify right side
    13,673.92x = 200,717,830.81
  5. Step 5: Solve for x
    x = 200,717,830.81/13,673.92
  6. Step 6: Final answer
    x = 14,678.88

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.