Home / 20,299.32-30,449.14-7,148.68

Finding the Fourth Proportional to 20,299.32, 30,449.14 and 7,148.68

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Solution

The fourth proportional to 20,299.32, 30,449.14 and 7,148.68 is: 10,723.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.32 : 30,449.14 = 7,148.68 : x
  2. Step 2: Convert to fraction form
    20,299.32/30,449.14 = 7,148.68/x
  3. Step 3: Cross multiply
    20,299.32x = 30,449.14 × 7,148.68
  4. Step 4: Simplify right side
    20,299.32x = 217,671,158.14
  5. Step 5: Solve for x
    x = 217,671,158.14/20,299.32
  6. Step 6: Final answer
    x = 10,723.08

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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.