Home / 12,111.40-18,167.10-9,922.60

Finding the Fourth Proportional to 12,111.40, 18,167.10 and 9,922.60

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Solution

The fourth proportional to 12,111.40, 18,167.10 and 9,922.60 is: 14,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.40 : 18,167.10 = 9,922.60 : x
  2. Step 2: Convert to fraction form
    12,111.40/18,167.10 = 9,922.60/x
  3. Step 3: Cross multiply
    12,111.40x = 18,167.10 × 9,922.60
  4. Step 4: Simplify right side
    12,111.40x = 180,264,866.46
  5. Step 5: Solve for x
    x = 180,264,866.46/12,111.40
  6. Step 6: Final answer
    x = 14,883.90

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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.