Home / 12,396.81-17,114.75-9,407.41

Finding the Fourth Proportional to 12,396.81, 17,114.75 and 9,407.41

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Solution

The fourth proportional to 12,396.81, 17,114.75 and 9,407.41 is: 12,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,396.81 : 17,114.75 = 9,407.41 : x
  2. Step 2: Convert to fraction form
    12,396.81/17,114.75 = 9,407.41/x
  3. Step 3: Cross multiply
    12,396.81x = 17,114.75 × 9,407.41
  4. Step 4: Simplify right side
    12,396.81x = 161,005,470.30
  5. Step 5: Solve for x
    x = 161,005,470.30/12,396.81
  6. Step 6: Final answer
    x = 12,987.65

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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.