Home / 19,615.40-29,413.84-7,126.61

Finding the Fourth Proportional to 19,615.40, 29,413.84 and 7,126.61

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Solution

The fourth proportional to 19,615.40, 29,413.84 and 7,126.61 is: 10,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.40 : 29,413.84 = 7,126.61 : x
  2. Step 2: Convert to fraction form
    19,615.40/29,413.84 = 7,126.61/x
  3. Step 3: Cross multiply
    19,615.40x = 29,413.84 × 7,126.61
  4. Step 4: Simplify right side
    19,615.40x = 209,620,966.28
  5. Step 5: Solve for x
    x = 209,620,966.28/19,615.40
  6. Step 6: Final answer
    x = 10,686.55

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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.