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Finding the Fourth Proportional to 38,710.52, 53,420.48 and 21,943.52

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Solution

The fourth proportional to 38,710.52, 53,420.48 and 21,943.52 is: 30,282.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,710.52 : 53,420.48 = 21,943.52 : x
  2. Step 2: Convert to fraction form
    38,710.52/53,420.48 = 21,943.52/x
  3. Step 3: Cross multiply
    38,710.52x = 53,420.48 × 21,943.52
  4. Step 4: Simplify right side
    38,710.52x = 1,172,233,371.29
  5. Step 5: Solve for x
    x = 1,172,233,371.29/38,710.52
  6. Step 6: Final answer
    x = 30,282.04

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Half scale
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Double scale
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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.