Home / 38,701.13-53,408.17-21,709.15

Finding the Fourth Proportional to 38,701.13, 53,408.17 and 21,709.15

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Solution

The fourth proportional to 38,701.13, 53,408.17 and 21,709.15 is: 29,958.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,701.13 : 53,408.17 = 21,709.15 : x
  2. Step 2: Convert to fraction form
    38,701.13/53,408.17 = 21,709.15/x
  3. Step 3: Cross multiply
    38,701.13x = 53,408.17 × 21,709.15
  4. Step 4: Simplify right side
    38,701.13x = 1,159,445,919.48
  5. Step 5: Solve for x
    x = 1,159,445,919.48/38,701.13
  6. Step 6: Final answer
    x = 29,958.97

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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.