Home / 21,413.90-32,170.11-15,189.32

Finding the Fourth Proportional to 21,413.90, 32,170.11 and 15,189.32

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Solution

The fourth proportional to 21,413.90, 32,170.11 and 15,189.32 is: 22,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.90 : 32,170.11 = 15,189.32 : x
  2. Step 2: Convert to fraction form
    21,413.90/32,170.11 = 15,189.32/x
  3. Step 3: Cross multiply
    21,413.90x = 32,170.11 × 15,189.32
  4. Step 4: Simplify right side
    21,413.90x = 488,642,095.23
  5. Step 5: Solve for x
    x = 488,642,095.23/21,413.90
  6. Step 6: Final answer
    x = 22,818.92

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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.