Home / 13,016.76-17,966.70-7,711.80

Finding the Fourth Proportional to 13,016.76, 17,966.70 and 7,711.80

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Solution

The fourth proportional to 13,016.76, 17,966.70 and 7,711.80 is: 10,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.76 : 17,966.70 = 7,711.80 : x
  2. Step 2: Convert to fraction form
    13,016.76/17,966.70 = 7,711.80/x
  3. Step 3: Cross multiply
    13,016.76x = 17,966.70 × 7,711.80
  4. Step 4: Simplify right side
    13,016.76x = 138,555,597.06
  5. Step 5: Solve for x
    x = 138,555,597.06/13,016.76
  6. Step 6: Final answer
    x = 10,644.40

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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.