Home / 21,422.32-32,128.26-6,426.52

Finding the Fourth Proportional to 21,422.32, 32,128.26 and 6,426.52

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Solution

The fourth proportional to 21,422.32, 32,128.26 and 6,426.52 is: 9,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.32 : 32,128.26 = 6,426.52 : x
  2. Step 2: Convert to fraction form
    21,422.32/32,128.26 = 6,426.52/x
  3. Step 3: Cross multiply
    21,422.32x = 32,128.26 × 6,426.52
  4. Step 4: Simplify right side
    21,422.32x = 206,472,905.46
  5. Step 5: Solve for x
    x = 206,472,905.46/21,422.32
  6. Step 6: Final answer
    x = 9,638.21

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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.