Home / 11,990.05-16,535.00-9,478.15

Finding the Fourth Proportional to 11,990.05, 16,535.00 and 9,478.15

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Solution

The fourth proportional to 11,990.05, 16,535.00 and 9,478.15 is: 13,070.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.05 : 16,535.00 = 9,478.15 : x
  2. Step 2: Convert to fraction form
    11,990.05/16,535.00 = 9,478.15/x
  3. Step 3: Cross multiply
    11,990.05x = 16,535.00 × 9,478.15
  4. Step 4: Simplify right side
    11,990.05x = 156,721,192.61
  5. Step 5: Solve for x
    x = 156,721,192.61/11,990.05
  6. Step 6: Final answer
    x = 13,070.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.