Home / 10,517.19-14,518.49-6,690.40

Finding the Fourth Proportional to 10,517.19, 14,518.49 and 6,690.40

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Solution

The fourth proportional to 10,517.19, 14,518.49 and 6,690.40 is: 9,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.19 : 14,518.49 = 6,690.40 : x
  2. Step 2: Convert to fraction form
    10,517.19/14,518.49 = 6,690.40/x
  3. Step 3: Cross multiply
    10,517.19x = 14,518.49 × 6,690.40
  4. Step 4: Simplify right side
    10,517.19x = 97,134,473.38
  5. Step 5: Solve for x
    x = 97,134,473.38/10,517.19
  6. Step 6: Final answer
    x = 9,235.78

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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.