Home / 15,116.32-20,860.15-8,401.89

Finding the Fourth Proportional to 15,116.32, 20,860.15 and 8,401.89

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Solution

The fourth proportional to 15,116.32, 20,860.15 and 8,401.89 is: 11,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.32 : 20,860.15 = 8,401.89 : x
  2. Step 2: Convert to fraction form
    15,116.32/20,860.15 = 8,401.89/x
  3. Step 3: Cross multiply
    15,116.32x = 20,860.15 × 8,401.89
  4. Step 4: Simplify right side
    15,116.32x = 175,264,581.38
  5. Step 5: Solve for x
    x = 175,264,581.38/15,116.32
  6. Step 6: Final answer
    x = 11,594.40

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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.