Home / 15,116.47-20,859.80-8,401.87

Finding the Fourth Proportional to 15,116.47, 20,859.80 and 8,401.87

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Solution

The fourth proportional to 15,116.47, 20,859.80 and 8,401.87 is: 11,594.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.47 : 20,859.80 = 8,401.87 : x
  2. Step 2: Convert to fraction form
    15,116.47/20,859.80 = 8,401.87/x
  3. Step 3: Cross multiply
    15,116.47x = 20,859.80 × 8,401.87
  4. Step 4: Simplify right side
    15,116.47x = 175,261,296.68
  5. Step 5: Solve for x
    x = 175,261,296.68/15,116.47
  6. Step 6: Final answer
    x = 11,594.06

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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.