Home / 10,891.40-16,304.70-7,197.80

Finding the Fourth Proportional to 10,891.40, 16,304.70 and 7,197.80

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Solution

The fourth proportional to 10,891.40, 16,304.70 and 7,197.80 is: 10,775.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.40 : 16,304.70 = 7,197.80 : x
  2. Step 2: Convert to fraction form
    10,891.40/16,304.70 = 7,197.80/x
  3. Step 3: Cross multiply
    10,891.40x = 16,304.70 × 7,197.80
  4. Step 4: Simplify right side
    10,891.40x = 117,357,969.66
  5. Step 5: Solve for x
    x = 117,357,969.66/10,891.40
  6. Step 6: Final answer
    x = 10,775.29

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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.