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Finding the Fourth Proportional to 38,355.92, 52,927.80 and 21,358.88

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Solution

The fourth proportional to 38,355.92, 52,927.80 and 21,358.88 is: 29,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,355.92 : 52,927.80 = 21,358.88 : x
  2. Step 2: Convert to fraction form
    38,355.92/52,927.80 = 21,358.88/x
  3. Step 3: Cross multiply
    38,355.92x = 52,927.80 × 21,358.88
  4. Step 4: Simplify right side
    38,355.92x = 1,130,478,528.86
  5. Step 5: Solve for x
    x = 1,130,478,528.86/38,355.92
  6. Step 6: Final answer
    x = 29,473.38

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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.