Home / 15,589.04-21,512.90-8,515.47

Finding the Fourth Proportional to 15,589.04, 21,512.90 and 8,515.47

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Solution

The fourth proportional to 15,589.04, 21,512.90 and 8,515.47 is: 11,751.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.04 : 21,512.90 = 8,515.47 : x
  2. Step 2: Convert to fraction form
    15,589.04/21,512.90 = 8,515.47/x
  3. Step 3: Cross multiply
    15,589.04x = 21,512.90 × 8,515.47
  4. Step 4: Simplify right side
    15,589.04x = 183,192,475.85
  5. Step 5: Solve for x
    x = 183,192,475.85/15,589.04
  6. Step 6: Final answer
    x = 11,751.36

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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.