Home / 21,237.12-31,857.12-5,654.88

Finding the Fourth Proportional to 21,237.12, 31,857.12 and 5,654.88

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Solution

The fourth proportional to 21,237.12, 31,857.12 and 5,654.88 is: 8,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.12 : 31,857.12 = 5,654.88 : x
  2. Step 2: Convert to fraction form
    21,237.12/31,857.12 = 5,654.88/x
  3. Step 3: Cross multiply
    21,237.12x = 31,857.12 × 5,654.88
  4. Step 4: Simplify right side
    21,237.12x = 180,148,190.75
  5. Step 5: Solve for x
    x = 180,148,190.75/21,237.12
  6. Step 6: Final answer
    x = 8,482.70

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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.