Home / 10,945.48-15,132.58-8,435.88

Finding the Fourth Proportional to 10,945.48, 15,132.58 and 8,435.88

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Solution

The fourth proportional to 10,945.48, 15,132.58 and 8,435.88 is: 11,662.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.48 : 15,132.58 = 8,435.88 : x
  2. Step 2: Convert to fraction form
    10,945.48/15,132.58 = 8,435.88/x
  3. Step 3: Cross multiply
    10,945.48x = 15,132.58 × 8,435.88
  4. Step 4: Simplify right side
    10,945.48x = 127,656,628.97
  5. Step 5: Solve for x
    x = 127,656,628.97/10,945.48
  6. Step 6: Final answer
    x = 11,662.95

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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.