Home / 13,778.46-19,014.66-8,470.26

Finding the Fourth Proportional to 13,778.46, 19,014.66 and 8,470.26

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Solution

The fourth proportional to 13,778.46, 19,014.66 and 8,470.26 is: 11,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.46 : 19,014.66 = 8,470.26 : x
  2. Step 2: Convert to fraction form
    13,778.46/19,014.66 = 8,470.26/x
  3. Step 3: Cross multiply
    13,778.46x = 19,014.66 × 8,470.26
  4. Step 4: Simplify right side
    13,778.46x = 161,059,114.01
  5. Step 5: Solve for x
    x = 161,059,114.01/13,778.46
  6. Step 6: Final answer
    x = 11,689.20

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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.