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Finding the Fourth Proportional to 15,011.15, 20,714.01 and 8,636.04

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Solution

The fourth proportional to 15,011.15, 20,714.01 and 8,636.04 is: 11,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.15 : 20,714.01 = 8,636.04 : x
  2. Step 2: Convert to fraction form
    15,011.15/20,714.01 = 8,636.04/x
  3. Step 3: Cross multiply
    15,011.15x = 20,714.01 × 8,636.04
  4. Step 4: Simplify right side
    15,011.15x = 178,887,018.92
  5. Step 5: Solve for x
    x = 178,887,018.92/15,011.15
  6. Step 6: Final answer
    x = 11,916.94

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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.