Home / 15,128.48-20,877.18-8,413.71

Finding the Fourth Proportional to 15,128.48, 20,877.18 and 8,413.71

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Solution

The fourth proportional to 15,128.48, 20,877.18 and 8,413.71 is: 11,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.48 : 20,877.18 = 8,413.71 : x
  2. Step 2: Convert to fraction form
    15,128.48/20,877.18 = 8,413.71/x
  3. Step 3: Cross multiply
    15,128.48x = 20,877.18 × 8,413.71
  4. Step 4: Simplify right side
    15,128.48x = 175,654,538.14
  5. Step 5: Solve for x
    x = 175,654,538.14/15,128.48
  6. Step 6: Final answer
    x = 11,610.86

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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.