Home / 22,254.90-30,715.01-12,821.62

Finding the Fourth Proportional to 22,254.90, 30,715.01 and 12,821.62

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Solution

The fourth proportional to 22,254.90, 30,715.01 and 12,821.62 is: 17,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,254.90 : 30,715.01 = 12,821.62 : x
  2. Step 2: Convert to fraction form
    22,254.90/30,715.01 = 12,821.62/x
  3. Step 3: Cross multiply
    22,254.90x = 30,715.01 × 12,821.62
  4. Step 4: Simplify right side
    22,254.90x = 393,816,186.52
  5. Step 5: Solve for x
    x = 393,816,186.52/22,254.90
  6. Step 6: Final answer
    x = 17,695.71

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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.