Home / 15,115.17-20,852.95-8,740.59

Finding the Fourth Proportional to 15,115.17, 20,852.95 and 8,740.59

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Solution

The fourth proportional to 15,115.17, 20,852.95 and 8,740.59 is: 12,058.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.17 : 20,852.95 = 8,740.59 : x
  2. Step 2: Convert to fraction form
    15,115.17/20,852.95 = 8,740.59/x
  3. Step 3: Cross multiply
    15,115.17x = 20,852.95 × 8,740.59
  4. Step 4: Simplify right side
    15,115.17x = 182,267,086.24
  5. Step 5: Solve for x
    x = 182,267,086.24/15,115.17
  6. Step 6: Final answer
    x = 12,058.55

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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.