Home / 10,987.72-15,159.42-6,207

Finding the Fourth Proportional to 10,987.72, 15,159.42 and 6,207

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Solution

The fourth proportional to 10,987.72, 15,159.42 and 6,207 is: 8,563.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.72 : 15,159.42 = 6,207 : x
  2. Step 2: Convert to fraction form
    10,987.72/15,159.42 = 6,207/x
  3. Step 3: Cross multiply
    10,987.72x = 15,159.42 × 6,207
  4. Step 4: Simplify right side
    10,987.72x = 94,094,519.94
  5. Step 5: Solve for x
    x = 94,094,519.94/10,987.72
  6. Step 6: Final answer
    x = 8,563.61

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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.