Home / 12,510.80-18,766.20-5,110.40

Finding the Fourth Proportional to 12,510.80, 18,766.20 and 5,110.40

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Solution

The fourth proportional to 12,510.80, 18,766.20 and 5,110.40 is: 7,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.80 : 18,766.20 = 5,110.40 : x
  2. Step 2: Convert to fraction form
    12,510.80/18,766.20 = 5,110.40/x
  3. Step 3: Cross multiply
    12,510.80x = 18,766.20 × 5,110.40
  4. Step 4: Simplify right side
    12,510.80x = 95,902,788.48
  5. Step 5: Solve for x
    x = 95,902,788.48/12,510.80
  6. Step 6: Final answer
    x = 7,665.60

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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.