Home / 12,475.35-17,219.63-8,169.10

Finding the Fourth Proportional to 12,475.35, 17,219.63 and 8,169.10

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Solution

The fourth proportional to 12,475.35, 17,219.63 and 8,169.10 is: 11,275.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.35 : 17,219.63 = 8,169.10 : x
  2. Step 2: Convert to fraction form
    12,475.35/17,219.63 = 8,169.10/x
  3. Step 3: Cross multiply
    12,475.35x = 17,219.63 × 8,169.10
  4. Step 4: Simplify right side
    12,475.35x = 140,668,856.81
  5. Step 5: Solve for x
    x = 140,668,856.81/12,475.35
  6. Step 6: Final answer
    x = 11,275.74

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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.