Home / 15,585.74-21,508.32-8,512.18

Finding the Fourth Proportional to 15,585.74, 21,508.32 and 8,512.18

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Solution

The fourth proportional to 15,585.74, 21,508.32 and 8,512.18 is: 11,746.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.74 : 21,508.32 = 8,512.18 : x
  2. Step 2: Convert to fraction form
    15,585.74/21,508.32 = 8,512.18/x
  3. Step 3: Cross multiply
    15,585.74x = 21,508.32 × 8,512.18
  4. Step 4: Simplify right side
    15,585.74x = 183,082,691.34
  5. Step 5: Solve for x
    x = 183,082,691.34/15,585.74
  6. Step 6: Final answer
    x = 11,746.81

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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.