Home / 20,186.24-30,279.08-7,038.56

Finding the Fourth Proportional to 20,186.24, 30,279.08 and 7,038.56

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Solution

The fourth proportional to 20,186.24, 30,279.08 and 7,038.56 is: 10,557.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.24 : 30,279.08 = 7,038.56 : x
  2. Step 2: Convert to fraction form
    20,186.24/30,279.08 = 7,038.56/x
  3. Step 3: Cross multiply
    20,186.24x = 30,279.08 × 7,038.56
  4. Step 4: Simplify right side
    20,186.24x = 213,121,214.62
  5. Step 5: Solve for x
    x = 213,121,214.62/20,186.24
  6. Step 6: Final answer
    x = 10,557.75

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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.