Home / 15,116.09-20,859.95-8,401.55

Finding the Fourth Proportional to 15,116.09, 20,859.95 and 8,401.55

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Solution

The fourth proportional to 15,116.09, 20,859.95 and 8,401.55 is: 11,594.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.09 : 20,859.95 = 8,401.55 : x
  2. Step 2: Convert to fraction form
    15,116.09/20,859.95 = 8,401.55/x
  3. Step 3: Cross multiply
    15,116.09x = 20,859.95 × 8,401.55
  4. Step 4: Simplify right side
    15,116.09x = 175,255,912.92
  5. Step 5: Solve for x
    x = 175,255,912.92/15,116.09
  6. Step 6: Final answer
    x = 11,594.00

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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.