Home / 15,072.30-20,799.38-8,357.91

Finding the Fourth Proportional to 15,072.30, 20,799.38 and 8,357.91

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Solution

The fourth proportional to 15,072.30, 20,799.38 and 8,357.91 is: 11,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.30 : 20,799.38 = 8,357.91 : x
  2. Step 2: Convert to fraction form
    15,072.30/20,799.38 = 8,357.91/x
  3. Step 3: Cross multiply
    15,072.30x = 20,799.38 × 8,357.91
  4. Step 4: Simplify right side
    15,072.30x = 173,839,346.10
  5. Step 5: Solve for x
    x = 173,839,346.10/15,072.30
  6. Step 6: Final answer
    x = 11,533.70

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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.