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Finding the Fourth Proportional to 13,760.76, 20,641.14 and 5,547

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Solution

The fourth proportional to 13,760.76, 20,641.14 and 5,547 is: 8,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.76 : 20,641.14 = 5,547 : x
  2. Step 2: Convert to fraction form
    13,760.76/20,641.14 = 5,547/x
  3. Step 3: Cross multiply
    13,760.76x = 20,641.14 × 5,547
  4. Step 4: Simplify right side
    13,760.76x = 114,496,403.58
  5. Step 5: Solve for x
    x = 114,496,403.58/13,760.76
  6. Step 6: Final answer
    x = 8,320.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.