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Finding the Fourth Proportional to 14,866.80, 22,348.80 and 12,728.40

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Solution

The fourth proportional to 14,866.80, 22,348.80 and 12,728.40 is: 19,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,866.80 : 22,348.80 = 12,728.40 : x
  2. Step 2: Convert to fraction form
    14,866.80/22,348.80 = 12,728.40/x
  3. Step 3: Cross multiply
    14,866.80x = 22,348.80 × 12,728.40
  4. Step 4: Simplify right side
    14,866.80x = 284,464,465.92
  5. Step 5: Solve for x
    x = 284,464,465.92/14,866.80
  6. Step 6: Final answer
    x = 19,134.21

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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.