Home / 15,585.89-21,508.43-8,512.34

Finding the Fourth Proportional to 15,585.89, 21,508.43 and 8,512.34

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Solution

The fourth proportional to 15,585.89, 21,508.43 and 8,512.34 is: 11,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.89 : 21,508.43 = 8,512.34 : x
  2. Step 2: Convert to fraction form
    15,585.89/21,508.43 = 8,512.34/x
  3. Step 3: Cross multiply
    15,585.89x = 21,508.43 × 8,512.34
  4. Step 4: Simplify right side
    15,585.89x = 183,086,918.92
  5. Step 5: Solve for x
    x = 183,086,918.92/15,585.89
  6. Step 6: Final answer
    x = 11,746.97

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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.