Home / 15,397.80-21,338.22-15,102.48

Finding the Fourth Proportional to 15,397.80, 21,338.22 and 15,102.48

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Solution

The fourth proportional to 15,397.80, 21,338.22 and 15,102.48 is: 20,928.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.80 : 21,338.22 = 15,102.48 : x
  2. Step 2: Convert to fraction form
    15,397.80/21,338.22 = 15,102.48/x
  3. Step 3: Cross multiply
    15,397.80x = 21,338.22 × 15,102.48
  4. Step 4: Simplify right side
    15,397.80x = 322,260,040.79
  5. Step 5: Solve for x
    x = 322,260,040.79/15,397.80
  6. Step 6: Final answer
    x = 20,928.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.