Home / 38,701.08-53,407.92-21,708.90

Finding the Fourth Proportional to 38,701.08, 53,407.92 and 21,708.90

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Solution

The fourth proportional to 38,701.08, 53,407.92 and 21,708.90 is: 29,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,701.08 : 53,407.92 = 21,708.90 : x
  2. Step 2: Convert to fraction form
    38,701.08/53,407.92 = 21,708.90/x
  3. Step 3: Cross multiply
    38,701.08x = 53,407.92 × 21,708.90
  4. Step 4: Simplify right side
    38,701.08x = 1,159,427,194.49
  5. Step 5: Solve for x
    x = 1,159,427,194.49/38,701.08
  6. Step 6: Final answer
    x = 29,958.52

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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.