Home / 10,510.80-15,766.20-9,998.80

Finding the Fourth Proportional to 10,510.80, 15,766.20 and 9,998.80

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Solution

The fourth proportional to 10,510.80, 15,766.20 and 9,998.80 is: 14,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,510.80 : 15,766.20 = 9,998.80 : x
  2. Step 2: Convert to fraction form
    10,510.80/15,766.20 = 9,998.80/x
  3. Step 3: Cross multiply
    10,510.80x = 15,766.20 × 9,998.80
  4. Step 4: Simplify right side
    10,510.80x = 157,643,080.56
  5. Step 5: Solve for x
    x = 157,643,080.56/10,510.80
  6. Step 6: Final answer
    x = 14,998.20

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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.