Home / 28,314.50-39,074.82-15,740.06

Finding the Fourth Proportional to 28,314.50, 39,074.82 and 15,740.06

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Solution

The fourth proportional to 28,314.50, 39,074.82 and 15,740.06 is: 21,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,314.50 : 39,074.82 = 15,740.06 : x
  2. Step 2: Convert to fraction form
    28,314.50/39,074.82 = 15,740.06/x
  3. Step 3: Cross multiply
    28,314.50x = 39,074.82 × 15,740.06
  4. Step 4: Simplify right side
    28,314.50x = 615,040,011.29
  5. Step 5: Solve for x
    x = 615,040,011.29/28,314.50
  6. Step 6: Final answer
    x = 21,721.73

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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.