Home / 12,562.20-18,821.70-10,618.20

Finding the Fourth Proportional to 12,562.20, 18,821.70 and 10,618.20

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Solution

The fourth proportional to 12,562.20, 18,821.70 and 10,618.20 is: 15,909.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,562.20 : 18,821.70 = 10,618.20 : x
  2. Step 2: Convert to fraction form
    12,562.20/18,821.70 = 10,618.20/x
  3. Step 3: Cross multiply
    12,562.20x = 18,821.70 × 10,618.20
  4. Step 4: Simplify right side
    12,562.20x = 199,852,574.94
  5. Step 5: Solve for x
    x = 199,852,574.94/12,562.20
  6. Step 6: Final answer
    x = 15,909.04

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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.