Home / 28,147.50-38,843.82-15,572.52

Finding the Fourth Proportional to 28,147.50, 38,843.82 and 15,572.52

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Solution

The fourth proportional to 28,147.50, 38,843.82 and 15,572.52 is: 21,490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.50 : 38,843.82 = 15,572.52 : x
  2. Step 2: Convert to fraction form
    28,147.50/38,843.82 = 15,572.52/x
  3. Step 3: Cross multiply
    28,147.50x = 38,843.82 × 15,572.52
  4. Step 4: Simplify right side
    28,147.50x = 604,896,163.83
  5. Step 5: Solve for x
    x = 604,896,163.83/28,147.50
  6. Step 6: Final answer
    x = 21,490.23

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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.