Home / 15,154.12-20,914.32-8,440.30

Finding the Fourth Proportional to 15,154.12, 20,914.32 and 8,440.30

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Solution

The fourth proportional to 15,154.12, 20,914.32 and 8,440.30 is: 11,648.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.12 : 20,914.32 = 8,440.30 : x
  2. Step 2: Convert to fraction form
    15,154.12/20,914.32 = 8,440.30/x
  3. Step 3: Cross multiply
    15,154.12x = 20,914.32 × 8,440.30
  4. Step 4: Simplify right side
    15,154.12x = 176,523,135.10
  5. Step 5: Solve for x
    x = 176,523,135.10/15,154.12
  6. Step 6: Final answer
    x = 11,648.52

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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.