Home / 21,422.15-32,139.79-9,585.89

Finding the Fourth Proportional to 21,422.15, 32,139.79 and 9,585.89

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Solution

The fourth proportional to 21,422.15, 32,139.79 and 9,585.89 is: 14,381.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.15 : 32,139.79 = 9,585.89 : x
  2. Step 2: Convert to fraction form
    21,422.15/32,139.79 = 9,585.89/x
  3. Step 3: Cross multiply
    21,422.15x = 32,139.79 × 9,585.89
  4. Step 4: Simplify right side
    21,422.15x = 308,088,481.34
  5. Step 5: Solve for x
    x = 308,088,481.34/21,422.15
  6. Step 6: Final answer
    x = 14,381.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.