Home / 28,489.48-39,314.50-15,741.92

Finding the Fourth Proportional to 28,489.48, 39,314.50 and 15,741.92

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Solution

The fourth proportional to 28,489.48, 39,314.50 and 15,741.92 is: 21,723.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.48 : 39,314.50 = 15,741.92 : x
  2. Step 2: Convert to fraction form
    28,489.48/39,314.50 = 15,741.92/x
  3. Step 3: Cross multiply
    28,489.48x = 39,314.50 × 15,741.92
  4. Step 4: Simplify right side
    28,489.48x = 618,885,713.84
  5. Step 5: Solve for x
    x = 618,885,713.84/28,489.48
  6. Step 6: Final answer
    x = 21,723.31

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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.