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Finding the Fourth Proportional to 14,957.01, 20,639.48 and 8,669.79

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Solution

The fourth proportional to 14,957.01, 20,639.48 and 8,669.79 is: 11,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,957.01 : 20,639.48 = 8,669.79 : x
  2. Step 2: Convert to fraction form
    14,957.01/20,639.48 = 8,669.79/x
  3. Step 3: Cross multiply
    14,957.01x = 20,639.48 × 8,669.79
  4. Step 4: Simplify right side
    14,957.01x = 178,939,913.96
  5. Step 5: Solve for x
    x = 178,939,913.96/14,957.01
  6. Step 6: Final answer
    x = 11,963.62

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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.