Home / 15,825.90-21,839.43-8,752.62

Finding the Fourth Proportional to 15,825.90, 21,839.43 and 8,752.62

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Solution

The fourth proportional to 15,825.90, 21,839.43 and 8,752.62 is: 12,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.90 : 21,839.43 = 8,752.62 : x
  2. Step 2: Convert to fraction form
    15,825.90/21,839.43 = 8,752.62/x
  3. Step 3: Cross multiply
    15,825.90x = 21,839.43 × 8,752.62
  4. Step 4: Simplify right side
    15,825.90x = 191,152,231.81
  5. Step 5: Solve for x
    x = 191,152,231.81/15,825.90
  6. Step 6: Final answer
    x = 12,078.44

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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.