Home / 21,422.61-32,133.92-12,516.12

Finding the Fourth Proportional to 21,422.61, 32,133.92 and 12,516.12

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Solution

The fourth proportional to 21,422.61, 32,133.92 and 12,516.12 is: 18,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.61 : 32,133.92 = 12,516.12 : x
  2. Step 2: Convert to fraction form
    21,422.61/32,133.92 = 12,516.12/x
  3. Step 3: Cross multiply
    21,422.61x = 32,133.92 × 12,516.12
  4. Step 4: Simplify right side
    21,422.61x = 402,191,936.21
  5. Step 5: Solve for x
    x = 402,191,936.21/21,422.61
  6. Step 6: Final answer
    x = 18,774.18

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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.