Home / 10,943.76-15,089.04-8,821.56

Finding the Fourth Proportional to 10,943.76, 15,089.04 and 8,821.56

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Solution

The fourth proportional to 10,943.76, 15,089.04 and 8,821.56 is: 12,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,943.76 : 15,089.04 = 8,821.56 : x
  2. Step 2: Convert to fraction form
    10,943.76/15,089.04 = 8,821.56/x
  3. Step 3: Cross multiply
    10,943.76x = 15,089.04 × 8,821.56
  4. Step 4: Simplify right side
    10,943.76x = 133,108,871.70
  5. Step 5: Solve for x
    x = 133,108,871.70/10,943.76
  6. Step 6: Final answer
    x = 12,162.99

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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.