Home / 38,508.08-53,135.16-21,740.72

Finding the Fourth Proportional to 38,508.08, 53,135.16 and 21,740.72

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Solution

The fourth proportional to 38,508.08, 53,135.16 and 21,740.72 is: 29,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,508.08 : 53,135.16 = 21,740.72 : x
  2. Step 2: Convert to fraction form
    38,508.08/53,135.16 = 21,740.72/x
  3. Step 3: Cross multiply
    38,508.08x = 53,135.16 × 21,740.72
  4. Step 4: Simplify right side
    38,508.08x = 1,155,196,635.72
  5. Step 5: Solve for x
    x = 1,155,196,635.72/38,508.08
  6. Step 6: Final answer
    x = 29,998.81

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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.