Home / 12,170.85-18,256.28-10,903.65

Finding the Fourth Proportional to 12,170.85, 18,256.28 and 10,903.65

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Solution

The fourth proportional to 12,170.85, 18,256.28 and 10,903.65 is: 16,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.85 : 18,256.28 = 10,903.65 : x
  2. Step 2: Convert to fraction form
    12,170.85/18,256.28 = 10,903.65/x
  3. Step 3: Cross multiply
    12,170.85x = 18,256.28 × 10,903.65
  4. Step 4: Simplify right side
    12,170.85x = 199,060,032.90
  5. Step 5: Solve for x
    x = 199,060,032.90/12,170.85
  6. Step 6: Final answer
    x = 16,355.48

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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.