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Finding the Fourth Proportional to 14,859.20, 22,252.80 and 7,918.40

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Solution

The fourth proportional to 14,859.20, 22,252.80 and 7,918.40 is: 11,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.20 : 22,252.80 = 7,918.40 : x
  2. Step 2: Convert to fraction form
    14,859.20/22,252.80 = 7,918.40/x
  3. Step 3: Cross multiply
    14,859.20x = 22,252.80 × 7,918.40
  4. Step 4: Simplify right side
    14,859.20x = 176,206,571.52
  5. Step 5: Solve for x
    x = 176,206,571.52/14,859.20
  6. Step 6: Final answer
    x = 11,858.42

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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.