Home / 11,427.80-17,117.40-7,491.20

Finding the Fourth Proportional to 11,427.80, 17,117.40 and 7,491.20

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Solution

The fourth proportional to 11,427.80, 17,117.40 and 7,491.20 is: 11,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427.80 : 17,117.40 = 7,491.20 : x
  2. Step 2: Convert to fraction form
    11,427.80/17,117.40 = 7,491.20/x
  3. Step 3: Cross multiply
    11,427.80x = 17,117.40 × 7,491.20
  4. Step 4: Simplify right side
    11,427.80x = 128,229,866.88
  5. Step 5: Solve for x
    x = 128,229,866.88/11,427.80
  6. Step 6: Final answer
    x = 11,220.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.