Home / 15,126.89-20,875.30-8,413.09

Finding the Fourth Proportional to 15,126.89, 20,875.30 and 8,413.09

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Solution

The fourth proportional to 15,126.89, 20,875.30 and 8,413.09 is: 11,610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.89 : 20,875.30 = 8,413.09 : x
  2. Step 2: Convert to fraction form
    15,126.89/20,875.30 = 8,413.09/x
  3. Step 3: Cross multiply
    15,126.89x = 20,875.30 × 8,413.09
  4. Step 4: Simplify right side
    15,126.89x = 175,625,704.46
  5. Step 5: Solve for x
    x = 175,625,704.46/15,126.89
  6. Step 6: Final answer
    x = 11,610.17

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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.