Home / 12,150.07-18,225.10-9,380.78

Finding the Fourth Proportional to 12,150.07, 18,225.10 and 9,380.78

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Solution

The fourth proportional to 12,150.07, 18,225.10 and 9,380.78 is: 14,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.07 : 18,225.10 = 9,380.78 : x
  2. Step 2: Convert to fraction form
    12,150.07/18,225.10 = 9,380.78/x
  3. Step 3: Cross multiply
    12,150.07x = 18,225.10 × 9,380.78
  4. Step 4: Simplify right side
    12,150.07x = 170,965,642.52
  5. Step 5: Solve for x
    x = 170,965,642.52/12,150.07
  6. Step 6: Final answer
    x = 14,071.17

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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.