Home / 15,116.24-20,858.78-8,402.15

Finding the Fourth Proportional to 15,116.24, 20,858.78 and 8,402.15

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Solution

The fourth proportional to 15,116.24, 20,858.78 and 8,402.15 is: 11,594.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.24 : 20,858.78 = 8,402.15 : x
  2. Step 2: Convert to fraction form
    15,116.24/20,858.78 = 8,402.15/x
  3. Step 3: Cross multiply
    15,116.24x = 20,858.78 × 8,402.15
  4. Step 4: Simplify right side
    15,116.24x = 175,258,671.53
  5. Step 5: Solve for x
    x = 175,258,671.53/15,116.24
  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.