Home / 15,589.20-21,513.06-8,515.62

Finding the Fourth Proportional to 15,589.20, 21,513.06 and 8,515.62

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Solution

The fourth proportional to 15,589.20, 21,513.06 and 8,515.62 is: 11,751.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.20 : 21,513.06 = 8,515.62 : x
  2. Step 2: Convert to fraction form
    15,589.20/21,513.06 = 8,515.62/x
  3. Step 3: Cross multiply
    15,589.20x = 21,513.06 × 8,515.62
  4. Step 4: Simplify right side
    15,589.20x = 183,197,044.00
  5. Step 5: Solve for x
    x = 183,197,044.00/15,589.20
  6. Step 6: Final answer
    x = 11,751.54

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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.