Home / 9,679.50-13,382.28-9,266.40

Finding the Fourth Proportional to 9,679.50, 13,382.28 and 9,266.40

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Solution

The fourth proportional to 9,679.50, 13,382.28 and 9,266.40 is: 12,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679.50 : 13,382.28 = 9,266.40 : x
  2. Step 2: Convert to fraction form
    9,679.50/13,382.28 = 9,266.40/x
  3. Step 3: Cross multiply
    9,679.50x = 13,382.28 × 9,266.40
  4. Step 4: Simplify right side
    9,679.50x = 124,005,559.39
  5. Step 5: Solve for x
    x = 124,005,559.39/9,679.50
  6. Step 6: Final answer
    x = 12,811.15

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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.