Home / 28,753.89-39,680.69-15,834.62

Finding the Fourth Proportional to 28,753.89, 39,680.69 and 15,834.62

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Solution

The fourth proportional to 28,753.89, 39,680.69 and 15,834.62 is: 21,851.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,753.89 : 39,680.69 = 15,834.62 : x
  2. Step 2: Convert to fraction form
    28,753.89/39,680.69 = 15,834.62/x
  3. Step 3: Cross multiply
    28,753.89x = 39,680.69 × 15,834.62
  4. Step 4: Simplify right side
    28,753.89x = 628,328,369.91
  5. Step 5: Solve for x
    x = 628,328,369.91/28,753.89
  6. Step 6: Final answer
    x = 21,851.94

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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.