Home / 12,188.80-18,288.40-5,954.32

Finding the Fourth Proportional to 12,188.80, 18,288.40 and 5,954.32

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Solution

The fourth proportional to 12,188.80, 18,288.40 and 5,954.32 is: 8,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.80 : 18,288.40 = 5,954.32 : x
  2. Step 2: Convert to fraction form
    12,188.80/18,288.40 = 5,954.32/x
  3. Step 3: Cross multiply
    12,188.80x = 18,288.40 × 5,954.32
  4. Step 4: Simplify right side
    12,188.80x = 108,894,985.89
  5. Step 5: Solve for x
    x = 108,894,985.89/12,188.80
  6. Step 6: Final answer
    x = 8,934.02

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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.