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Finding the Fourth Proportional to 14,965.30, 20,650.71 and 8,677

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Solution

The fourth proportional to 14,965.30, 20,650.71 and 8,677 is: 11,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.30 : 20,650.71 = 8,677 : x
  2. Step 2: Convert to fraction form
    14,965.30/20,650.71 = 8,677/x
  3. Step 3: Cross multiply
    14,965.30x = 20,650.71 × 8,677
  4. Step 4: Simplify right side
    14,965.30x = 179,186,210.67
  5. Step 5: Solve for x
    x = 179,186,210.67/14,965.30
  6. Step 6: Final answer
    x = 11,973.45

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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.