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Finding the Fourth Proportional to 21,793.80, 32,729.10 and 16,875.40

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Solution

The fourth proportional to 21,793.80, 32,729.10 and 16,875.40 is: 25,342.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.80 : 32,729.10 = 16,875.40 : x
  2. Step 2: Convert to fraction form
    21,793.80/32,729.10 = 16,875.40/x
  3. Step 3: Cross multiply
    21,793.80x = 32,729.10 × 16,875.40
  4. Step 4: Simplify right side
    21,793.80x = 552,316,654.14
  5. Step 5: Solve for x
    x = 552,316,654.14/21,793.80
  6. Step 6: Final answer
    x = 25,342.83

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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.