Home / 21,472.48-29,685.30-21,275.56

Finding the Fourth Proportional to 21,472.48, 29,685.30 and 21,275.56

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Solution

The fourth proportional to 21,472.48, 29,685.30 and 21,275.56 is: 29,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.48 : 29,685.30 = 21,275.56 : x
  2. Step 2: Convert to fraction form
    21,472.48/29,685.30 = 21,275.56/x
  3. Step 3: Cross multiply
    21,472.48x = 29,685.30 × 21,275.56
  4. Step 4: Simplify right side
    21,472.48x = 631,571,381.27
  5. Step 5: Solve for x
    x = 631,571,381.27/21,472.48
  6. Step 6: Final answer
    x = 29,413.06

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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.