Home / 15,155.28-20,914.23-8,440.99

Finding the Fourth Proportional to 15,155.28, 20,914.23 and 8,440.99

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Solution

The fourth proportional to 15,155.28, 20,914.23 and 8,440.99 is: 11,648.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.28 : 20,914.23 = 8,440.99 : x
  2. Step 2: Convert to fraction form
    15,155.28/20,914.23 = 8,440.99/x
  3. Step 3: Cross multiply
    15,155.28x = 20,914.23 × 8,440.99
  4. Step 4: Simplify right side
    15,155.28x = 176,536,785.66
  5. Step 5: Solve for x
    x = 176,536,785.66/15,155.28
  6. Step 6: Final answer
    x = 11,648.53

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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.