Home / 12,341.40-18,531.90-11,431.80

Finding the Fourth Proportional to 12,341.40, 18,531.90 and 11,431.80

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Solution

The fourth proportional to 12,341.40, 18,531.90 and 11,431.80 is: 17,166.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,341.40 : 18,531.90 = 11,431.80 : x
  2. Step 2: Convert to fraction form
    12,341.40/18,531.90 = 11,431.80/x
  3. Step 3: Cross multiply
    12,341.40x = 18,531.90 × 11,431.80
  4. Step 4: Simplify right side
    12,341.40x = 211,852,974.42
  5. Step 5: Solve for x
    x = 211,852,974.42/12,341.40
  6. Step 6: Final answer
    x = 17,166.04

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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.