Home / 15,116.30-20,858.16-8,401.90

Finding the Fourth Proportional to 15,116.30, 20,858.16 and 8,401.90

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Solution

The fourth proportional to 15,116.30, 20,858.16 and 8,401.90 is: 11,593.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.30 : 20,858.16 = 8,401.90 : x
  2. Step 2: Convert to fraction form
    15,116.30/20,858.16 = 8,401.90/x
  3. Step 3: Cross multiply
    15,116.30x = 20,858.16 × 8,401.90
  4. Step 4: Simplify right side
    15,116.30x = 175,248,174.50
  5. Step 5: Solve for x
    x = 175,248,174.50/15,116.30
  6. Step 6: Final answer
    x = 11,593.32

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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.