Home / 12,000.08-18,023.47-9,780.55

Finding the Fourth Proportional to 12,000.08, 18,023.47 and 9,780.55

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Solution

The fourth proportional to 12,000.08, 18,023.47 and 9,780.55 is: 14,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.08 : 18,023.47 = 9,780.55 : x
  2. Step 2: Convert to fraction form
    12,000.08/18,023.47 = 9,780.55/x
  3. Step 3: Cross multiply
    12,000.08x = 18,023.47 × 9,780.55
  4. Step 4: Simplify right side
    12,000.08x = 176,279,416.68
  5. Step 5: Solve for x
    x = 176,279,416.68/12,000.08
  6. Step 6: Final answer
    x = 14,689.86

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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.