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Finding the Fourth Proportional to 14,641.88, 20,203.80 and 8,267.42

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Solution

The fourth proportional to 14,641.88, 20,203.80 and 8,267.42 is: 11,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,641.88 : 20,203.80 = 8,267.42 : x
  2. Step 2: Convert to fraction form
    14,641.88/20,203.80 = 8,267.42/x
  3. Step 3: Cross multiply
    14,641.88x = 20,203.80 × 8,267.42
  4. Step 4: Simplify right side
    14,641.88x = 167,033,300.20
  5. Step 5: Solve for x
    x = 167,033,300.20/14,641.88
  6. Step 6: Final answer
    x = 11,407.91

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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.