Home / 15,072.83-20,800.56-8,359.08

Finding the Fourth Proportional to 15,072.83, 20,800.56 and 8,359.08

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Solution

The fourth proportional to 15,072.83, 20,800.56 and 8,359.08 is: 11,535.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.83 : 20,800.56 = 8,359.08 : x
  2. Step 2: Convert to fraction form
    15,072.83/20,800.56 = 8,359.08/x
  3. Step 3: Cross multiply
    15,072.83x = 20,800.56 × 8,359.08
  4. Step 4: Simplify right side
    15,072.83x = 173,873,565.98
  5. Step 5: Solve for x
    x = 173,873,565.98/15,072.83
  6. Step 6: Final answer
    x = 11,535.56

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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.