Home / 20,983.50-28,957.23-11,552.94

Finding the Fourth Proportional to 20,983.50, 28,957.23 and 11,552.94

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Solution

The fourth proportional to 20,983.50, 28,957.23 and 11,552.94 is: 15,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.50 : 28,957.23 = 11,552.94 : x
  2. Step 2: Convert to fraction form
    20,983.50/28,957.23 = 11,552.94/x
  3. Step 3: Cross multiply
    20,983.50x = 28,957.23 × 11,552.94
  4. Step 4: Simplify right side
    20,983.50x = 334,541,140.76
  5. Step 5: Solve for x
    x = 334,541,140.76/20,983.50
  6. Step 6: Final answer
    x = 15,943.06

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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.