Home / 15,413.70-21,265.20-11,390.22

Finding the Fourth Proportional to 15,413.70, 21,265.20 and 11,390.22

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Solution

The fourth proportional to 15,413.70, 21,265.20 and 11,390.22 is: 15,714.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.70 : 21,265.20 = 11,390.22 : x
  2. Step 2: Convert to fraction form
    15,413.70/21,265.20 = 11,390.22/x
  3. Step 3: Cross multiply
    15,413.70x = 21,265.20 × 11,390.22
  4. Step 4: Simplify right side
    15,413.70x = 242,215,306.34
  5. Step 5: Solve for x
    x = 242,215,306.34/15,413.70
  6. Step 6: Final answer
    x = 15,714.29

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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.