Home / 16,918.40-23,355.20-12,442.88

Finding the Fourth Proportional to 16,918.40, 23,355.20 and 12,442.88

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Solution

The fourth proportional to 16,918.40, 23,355.20 and 12,442.88 is: 17,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,918.40 : 23,355.20 = 12,442.88 : x
  2. Step 2: Convert to fraction form
    16,918.40/23,355.20 = 12,442.88/x
  3. Step 3: Cross multiply
    16,918.40x = 23,355.20 × 12,442.88
  4. Step 4: Simplify right side
    16,918.40x = 290,605,950.98
  5. Step 5: Solve for x
    x = 290,605,950.98/16,918.40
  6. Step 6: Final answer
    x = 17,176.92

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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.