Home / 28,937.72-39,920.57-18,732.05

Finding the Fourth Proportional to 28,937.72, 39,920.57 and 18,732.05

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Solution

The fourth proportional to 28,937.72, 39,920.57 and 18,732.05 is: 25,841.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,937.72 : 39,920.57 = 18,732.05 : x
  2. Step 2: Convert to fraction form
    28,937.72/39,920.57 = 18,732.05/x
  3. Step 3: Cross multiply
    28,937.72x = 39,920.57 × 18,732.05
  4. Step 4: Simplify right side
    28,937.72x = 747,794,113.27
  5. Step 5: Solve for x
    x = 747,794,113.27/28,937.72
  6. Step 6: Final answer
    x = 25,841.50

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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.