Home / 11,187.80-15,439.56-7,417.52

Finding the Fourth Proportional to 11,187.80, 15,439.56 and 7,417.52

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Solution

The fourth proportional to 11,187.80, 15,439.56 and 7,417.52 is: 10,236.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.80 : 15,439.56 = 7,417.52 : x
  2. Step 2: Convert to fraction form
    11,187.80/15,439.56 = 7,417.52/x
  3. Step 3: Cross multiply
    11,187.80x = 15,439.56 × 7,417.52
  4. Step 4: Simplify right side
    11,187.80x = 114,523,245.09
  5. Step 5: Solve for x
    x = 114,523,245.09/11,187.80
  6. Step 6: Final answer
    x = 10,236.44

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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.