Home / 15,270.19-21,074.11-8,983.78

Finding the Fourth Proportional to 15,270.19, 21,074.11 and 8,983.78

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Solution

The fourth proportional to 15,270.19, 21,074.11 and 8,983.78 is: 12,398.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.19 : 21,074.11 = 8,983.78 : x
  2. Step 2: Convert to fraction form
    15,270.19/21,074.11 = 8,983.78/x
  3. Step 3: Cross multiply
    15,270.19x = 21,074.11 × 8,983.78
  4. Step 4: Simplify right side
    15,270.19x = 189,325,092.79
  5. Step 5: Solve for x
    x = 189,325,092.79/15,270.19
  6. Step 6: Final answer
    x = 12,398.35

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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.