Home / 38,155.64-52,654.78-21,388.64

Finding the Fourth Proportional to 38,155.64, 52,654.78 and 21,388.64

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Solution

The fourth proportional to 38,155.64, 52,654.78 and 21,388.64 is: 29,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,155.64 : 52,654.78 = 21,388.64 : x
  2. Step 2: Convert to fraction form
    38,155.64/52,654.78 = 21,388.64/x
  3. Step 3: Cross multiply
    38,155.64x = 52,654.78 × 21,388.64
  4. Step 4: Simplify right side
    38,155.64x = 1,126,214,253.50
  5. Step 5: Solve for x
    x = 1,126,214,253.50/38,155.64
  6. Step 6: Final answer
    x = 29,516.32

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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.