Home / 13,470.18-18,586.12-8,161.92

Finding the Fourth Proportional to 13,470.18, 18,586.12 and 8,161.92

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Solution

The fourth proportional to 13,470.18, 18,586.12 and 8,161.92 is: 11,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.18 : 18,586.12 = 8,161.92 : x
  2. Step 2: Convert to fraction form
    13,470.18/18,586.12 = 8,161.92/x
  3. Step 3: Cross multiply
    13,470.18x = 18,586.12 × 8,161.92
  4. Step 4: Simplify right side
    13,470.18x = 151,698,424.55
  5. Step 5: Solve for x
    x = 151,698,424.55/13,470.18
  6. Step 6: Final answer
    x = 11,261.80

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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.