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Finding the Fourth Proportional to 21,334.80, 32,002.20 and 13,552.40

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Solution

The fourth proportional to 21,334.80, 32,002.20 and 13,552.40 is: 20,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.80 : 32,002.20 = 13,552.40 : x
  2. Step 2: Convert to fraction form
    21,334.80/32,002.20 = 13,552.40/x
  3. Step 3: Cross multiply
    21,334.80x = 32,002.20 × 13,552.40
  4. Step 4: Simplify right side
    21,334.80x = 433,706,615.28
  5. Step 5: Solve for x
    x = 433,706,615.28/21,334.80
  6. Step 6: Final answer
    x = 20,328.60

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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.