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Finding the Fourth Proportional to 14,503.60, 21,706.80 and 13,337.20

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Solution

The fourth proportional to 14,503.60, 21,706.80 and 13,337.20 is: 19,961.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,503.60 : 21,706.80 = 13,337.20 : x
  2. Step 2: Convert to fraction form
    14,503.60/21,706.80 = 13,337.20/x
  3. Step 3: Cross multiply
    14,503.60x = 21,706.80 × 13,337.20
  4. Step 4: Simplify right side
    14,503.60x = 289,507,932.96
  5. Step 5: Solve for x
    x = 289,507,932.96/14,503.60
  6. Step 6: Final answer
    x = 19,961.11

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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.