Home / 19,326.12-28,989.45-5,475.12

Finding the Fourth Proportional to 19,326.12, 28,989.45 and 5,475.12

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Solution

The fourth proportional to 19,326.12, 28,989.45 and 5,475.12 is: 8,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326.12 : 28,989.45 = 5,475.12 : x
  2. Step 2: Convert to fraction form
    19,326.12/28,989.45 = 5,475.12/x
  3. Step 3: Cross multiply
    19,326.12x = 28,989.45 × 5,475.12
  4. Step 4: Simplify right side
    19,326.12x = 158,720,717.48
  5. Step 5: Solve for x
    x = 158,720,717.48/19,326.12
  6. Step 6: Final answer
    x = 8,212.76

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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.