Home / 15,109.04-20,850.48-8,395.76

Finding the Fourth Proportional to 15,109.04, 20,850.48 and 8,395.76

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Solution

The fourth proportional to 15,109.04, 20,850.48 and 8,395.76 is: 11,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.04 : 20,850.48 = 8,395.76 : x
  2. Step 2: Convert to fraction form
    15,109.04/20,850.48 = 8,395.76/x
  3. Step 3: Cross multiply
    15,109.04x = 20,850.48 × 8,395.76
  4. Step 4: Simplify right side
    15,109.04x = 175,055,625.96
  5. Step 5: Solve for x
    x = 175,055,625.96/15,109.04
  6. Step 6: Final answer
    x = 11,586.15

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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.