Home / 28,404.24-39,198.12-15,657.68

Finding the Fourth Proportional to 28,404.24, 39,198.12 and 15,657.68

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Solution

The fourth proportional to 28,404.24, 39,198.12 and 15,657.68 is: 21,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.24 : 39,198.12 = 15,657.68 : x
  2. Step 2: Convert to fraction form
    28,404.24/39,198.12 = 15,657.68/x
  3. Step 3: Cross multiply
    28,404.24x = 39,198.12 × 15,657.68
  4. Step 4: Simplify right side
    28,404.24x = 613,751,423.57
  5. Step 5: Solve for x
    x = 613,751,423.57/28,404.24
  6. Step 6: Final answer
    x = 21,607.74

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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.