Home / 15,801.50-21,805.68-8,727.80

Finding the Fourth Proportional to 15,801.50, 21,805.68 and 8,727.80

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Solution

The fourth proportional to 15,801.50, 21,805.68 and 8,727.80 is: 12,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.50 : 21,805.68 = 8,727.80 : x
  2. Step 2: Convert to fraction form
    15,801.50/21,805.68 = 8,727.80/x
  3. Step 3: Cross multiply
    15,801.50x = 21,805.68 × 8,727.80
  4. Step 4: Simplify right side
    15,801.50x = 190,315,613.90
  5. Step 5: Solve for x
    x = 190,315,613.90/15,801.50
  6. Step 6: Final answer
    x = 12,044.15

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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.