Home / 38,211.20-52,731.64-21,215.68

Finding the Fourth Proportional to 38,211.20, 52,731.64 and 21,215.68

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Solution

The fourth proportional to 38,211.20, 52,731.64 and 21,215.68 is: 29,277.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,211.20 : 52,731.64 = 21,215.68 : x
  2. Step 2: Convert to fraction form
    38,211.20/52,731.64 = 21,215.68/x
  3. Step 3: Cross multiply
    38,211.20x = 52,731.64 × 21,215.68
  4. Step 4: Simplify right side
    38,211.20x = 1,118,737,600.12
  5. Step 5: Solve for x
    x = 1,118,737,600.12/38,211.20
  6. Step 6: Final answer
    x = 29,277.74

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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.