Home / 15,585.04-21,508.23-8,512.12

Finding the Fourth Proportional to 15,585.04, 21,508.23 and 8,512.12

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Solution

The fourth proportional to 15,585.04, 21,508.23 and 8,512.12 is: 11,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.04 : 21,508.23 = 8,512.12 : x
  2. Step 2: Convert to fraction form
    15,585.04/21,508.23 = 8,512.12/x
  3. Step 3: Cross multiply
    15,585.04x = 21,508.23 × 8,512.12
  4. Step 4: Simplify right side
    15,585.04x = 183,080,634.75
  5. Step 5: Solve for x
    x = 183,080,634.75/15,585.04
  6. Step 6: Final answer
    x = 11,747.20

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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.