Home / 28,493.28-39,319.97-15,918.03

Finding the Fourth Proportional to 28,493.28, 39,319.97 and 15,918.03

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Solution

The fourth proportional to 28,493.28, 39,319.97 and 15,918.03 is: 21,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.28 : 39,319.97 = 15,918.03 : x
  2. Step 2: Convert to fraction form
    28,493.28/39,319.97 = 15,918.03/x
  3. Step 3: Cross multiply
    28,493.28x = 39,319.97 × 15,918.03
  4. Step 4: Simplify right side
    28,493.28x = 625,896,382.47
  5. Step 5: Solve for x
    x = 625,896,382.47/28,493.28
  6. Step 6: Final answer
    x = 21,966.46

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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.