Home / 12,147.89-18,200.85-9,484.80

Finding the Fourth Proportional to 12,147.89, 18,200.85 and 9,484.80

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Solution

The fourth proportional to 12,147.89, 18,200.85 and 9,484.80 is: 14,210.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.89 : 18,200.85 = 9,484.80 : x
  2. Step 2: Convert to fraction form
    12,147.89/18,200.85 = 9,484.80/x
  3. Step 3: Cross multiply
    12,147.89x = 18,200.85 × 9,484.80
  4. Step 4: Simplify right side
    12,147.89x = 172,631,422.08
  5. Step 5: Solve for x
    x = 172,631,422.08/12,147.89
  6. Step 6: Final answer
    x = 14,210.82

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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.