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Finding the Fourth Proportional to 19,752.62, 29,640.62 and 7,281.40

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Solution

The fourth proportional to 19,752.62, 29,640.62 and 7,281.40 is: 10,926.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,752.62 : 29,640.62 = 7,281.40 : x
  2. Step 2: Convert to fraction form
    19,752.62/29,640.62 = 7,281.40/x
  3. Step 3: Cross multiply
    19,752.62x = 29,640.62 × 7,281.40
  4. Step 4: Simplify right side
    19,752.62x = 215,825,210.47
  5. Step 5: Solve for x
    x = 215,825,210.47/19,752.62
  6. Step 6: Final answer
    x = 10,926.41

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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.