Home / 10,660.80-15,966.48-10,291.68

Finding the Fourth Proportional to 10,660.80, 15,966.48 and 10,291.68

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Solution

The fourth proportional to 10,660.80, 15,966.48 and 10,291.68 is: 15,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.80 : 15,966.48 = 10,291.68 : x
  2. Step 2: Convert to fraction form
    10,660.80/15,966.48 = 10,291.68/x
  3. Step 3: Cross multiply
    10,660.80x = 15,966.48 × 10,291.68
  4. Step 4: Simplify right side
    10,660.80x = 164,321,902.89
  5. Step 5: Solve for x
    x = 164,321,902.89/10,660.80
  6. Step 6: Final answer
    x = 15,413.66

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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.