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Finding the Fourth Proportional to 13,957.94, 20,966.88 and 8,767.46

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Solution

The fourth proportional to 13,957.94, 20,966.88 and 8,767.46 is: 13,170.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.94 : 20,966.88 = 8,767.46 : x
  2. Step 2: Convert to fraction form
    13,957.94/20,966.88 = 8,767.46/x
  3. Step 3: Cross multiply
    13,957.94x = 20,966.88 × 8,767.46
  4. Step 4: Simplify right side
    13,957.94x = 183,826,281.72
  5. Step 5: Solve for x
    x = 183,826,281.72/13,957.94
  6. Step 6: Final answer
    x = 13,170.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.