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Finding the Fourth Proportional to 14,869.72, 20,514.36 and 8,580.88

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Solution

The fourth proportional to 14,869.72, 20,514.36 and 8,580.88 is: 11,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.72 : 20,514.36 = 8,580.88 : x
  2. Step 2: Convert to fraction form
    14,869.72/20,514.36 = 8,580.88/x
  3. Step 3: Cross multiply
    14,869.72x = 20,514.36 × 8,580.88
  4. Step 4: Simplify right side
    14,869.72x = 176,031,261.44
  5. Step 5: Solve for x
    x = 176,031,261.44/14,869.72
  6. Step 6: Final answer
    x = 11,838.24

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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.