Home / 15,110.35-20,852.10-8,395.72

Finding the Fourth Proportional to 15,110.35, 20,852.10 and 8,395.72

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Solution

The fourth proportional to 15,110.35, 20,852.10 and 8,395.72 is: 11,585.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.35 : 20,852.10 = 8,395.72 : x
  2. Step 2: Convert to fraction form
    15,110.35/20,852.10 = 8,395.72/x
  3. Step 3: Cross multiply
    15,110.35x = 20,852.10 × 8,395.72
  4. Step 4: Simplify right side
    15,110.35x = 175,068,340.88
  5. Step 5: Solve for x
    x = 175,068,340.88/15,110.35
  6. Step 6: Final answer
    x = 11,585.99

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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.