Home / 15,109.28-20,850.20-8,395.32

Finding the Fourth Proportional to 15,109.28, 20,850.20 and 8,395.32

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Solution

The fourth proportional to 15,109.28, 20,850.20 and 8,395.32 is: 11,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.28 : 20,850.20 = 8,395.32 : x
  2. Step 2: Convert to fraction form
    15,109.28/20,850.20 = 8,395.32/x
  3. Step 3: Cross multiply
    15,109.28x = 20,850.20 × 8,395.32
  4. Step 4: Simplify right side
    15,109.28x = 175,044,101.06
  5. Step 5: Solve for x
    x = 175,044,101.06/15,109.28
  6. Step 6: Final answer
    x = 11,585.20

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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.