Home / 21,440.80-32,155.13-13,531.46

Finding the Fourth Proportional to 21,440.80, 32,155.13 and 13,531.46

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Solution

The fourth proportional to 21,440.80, 32,155.13 and 13,531.46 is: 20,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.80 : 32,155.13 = 13,531.46 : x
  2. Step 2: Convert to fraction form
    21,440.80/32,155.13 = 13,531.46/x
  3. Step 3: Cross multiply
    21,440.80x = 32,155.13 × 13,531.46
  4. Step 4: Simplify right side
    21,440.80x = 435,105,652.33
  5. Step 5: Solve for x
    x = 435,105,652.33/21,440.80
  6. Step 6: Final answer
    x = 20,293.35

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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.