Home / 21,393.18-29,480.96-15,413.56

Finding the Fourth Proportional to 21,393.18, 29,480.96 and 15,413.56

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Solution

The fourth proportional to 21,393.18, 29,480.96 and 15,413.56 is: 21,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.18 : 29,480.96 = 15,413.56 : x
  2. Step 2: Convert to fraction form
    21,393.18/29,480.96 = 15,413.56/x
  3. Step 3: Cross multiply
    21,393.18x = 29,480.96 × 15,413.56
  4. Step 4: Simplify right side
    21,393.18x = 454,406,510.65
  5. Step 5: Solve for x
    x = 454,406,510.65/21,393.18
  6. Step 6: Final answer
    x = 21,240.72

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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.