Home / 21,375.60-32,014.80-13,502.40

Finding the Fourth Proportional to 21,375.60, 32,014.80 and 13,502.40

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Solution

The fourth proportional to 21,375.60, 32,014.80 and 13,502.40 is: 20,222.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.60 : 32,014.80 = 13,502.40 : x
  2. Step 2: Convert to fraction form
    21,375.60/32,014.80 = 13,502.40/x
  3. Step 3: Cross multiply
    21,375.60x = 32,014.80 × 13,502.40
  4. Step 4: Simplify right side
    21,375.60x = 432,276,635.52
  5. Step 5: Solve for x
    x = 432,276,635.52/21,375.60
  6. Step 6: Final answer
    x = 20,222.90

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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.