Home / 21,869.20-32,803.80-9,387.10

Finding the Fourth Proportional to 21,869.20, 32,803.80 and 9,387.10

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Solution

The fourth proportional to 21,869.20, 32,803.80 and 9,387.10 is: 14,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.20 : 32,803.80 = 9,387.10 : x
  2. Step 2: Convert to fraction form
    21,869.20/32,803.80 = 9,387.10/x
  3. Step 3: Cross multiply
    21,869.20x = 32,803.80 × 9,387.10
  4. Step 4: Simplify right side
    21,869.20x = 307,932,550.98
  5. Step 5: Solve for x
    x = 307,932,550.98/21,869.20
  6. Step 6: Final answer
    x = 14,080.65

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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.