Home / 12,000.08-17,990.40-5,422.88

Finding the Fourth Proportional to 12,000.08, 17,990.40 and 5,422.88

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Solution

The fourth proportional to 12,000.08, 17,990.40 and 5,422.88 is: 8,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.08 : 17,990.40 = 5,422.88 : x
  2. Step 2: Convert to fraction form
    12,000.08/17,990.40 = 5,422.88/x
  3. Step 3: Cross multiply
    12,000.08x = 17,990.40 × 5,422.88
  4. Step 4: Simplify right side
    12,000.08x = 97,559,780.35
  5. Step 5: Solve for x
    x = 97,559,780.35/12,000.08
  6. Step 6: Final answer
    x = 8,129.93

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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.