Home / 21,589.95-29,792.11-15,927.85

Finding the Fourth Proportional to 21,589.95, 29,792.11 and 15,927.85

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Solution

The fourth proportional to 21,589.95, 29,792.11 and 15,927.85 is: 21,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.95 : 29,792.11 = 15,927.85 : x
  2. Step 2: Convert to fraction form
    21,589.95/29,792.11 = 15,927.85/x
  3. Step 3: Cross multiply
    21,589.95x = 29,792.11 × 15,927.85
  4. Step 4: Simplify right side
    21,589.95x = 474,524,259.26
  5. Step 5: Solve for x
    x = 474,524,259.26/21,589.95
  6. Step 6: Final answer
    x = 21,978.94

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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.