Home / 28,942.72-39,929.18-18,867.62

Finding the Fourth Proportional to 28,942.72, 39,929.18 and 18,867.62

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Solution

The fourth proportional to 28,942.72, 39,929.18 and 18,867.62 is: 26,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.72 : 39,929.18 = 18,867.62 : x
  2. Step 2: Convert to fraction form
    28,942.72/39,929.18 = 18,867.62/x
  3. Step 3: Cross multiply
    28,942.72x = 39,929.18 × 18,867.62
  4. Step 4: Simplify right side
    28,942.72x = 753,368,595.15
  5. Step 5: Solve for x
    x = 753,368,595.15/28,942.72
  6. Step 6: Final answer
    x = 26,029.64

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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.