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Finding the Fourth Proportional to 11,292.80, 16,955.40 and 8,830.40

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Solution

The fourth proportional to 11,292.80, 16,955.40 and 8,830.40 is: 13,258.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,292.80 : 16,955.40 = 8,830.40 : x
  2. Step 2: Convert to fraction form
    11,292.80/16,955.40 = 8,830.40/x
  3. Step 3: Cross multiply
    11,292.80x = 16,955.40 × 8,830.40
  4. Step 4: Simplify right side
    11,292.80x = 149,722,964.16
  5. Step 5: Solve for x
    x = 149,722,964.16/11,292.80
  6. Step 6: Final answer
    x = 13,258.27

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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.