Home / 28,267.88-39,010.02-15,693.80

Finding the Fourth Proportional to 28,267.88, 39,010.02 and 15,693.80

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Solution

The fourth proportional to 28,267.88, 39,010.02 and 15,693.80 is: 21,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,267.88 : 39,010.02 = 15,693.80 : x
  2. Step 2: Convert to fraction form
    28,267.88/39,010.02 = 15,693.80/x
  3. Step 3: Cross multiply
    28,267.88x = 39,010.02 × 15,693.80
  4. Step 4: Simplify right side
    28,267.88x = 612,215,451.88
  5. Step 5: Solve for x
    x = 612,215,451.88/28,267.88
  6. Step 6: Final answer
    x = 21,657.64

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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.