Home / 13,133.80-18,123.78-8,097.40

Finding the Fourth Proportional to 13,133.80, 18,123.78 and 8,097.40

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Solution

The fourth proportional to 13,133.80, 18,123.78 and 8,097.40 is: 11,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.80 : 18,123.78 = 8,097.40 : x
  2. Step 2: Convert to fraction form
    13,133.80/18,123.78 = 8,097.40/x
  3. Step 3: Cross multiply
    13,133.80x = 18,123.78 × 8,097.40
  4. Step 4: Simplify right side
    13,133.80x = 146,755,496.17
  5. Step 5: Solve for x
    x = 146,755,496.17/13,133.80
  6. Step 6: Final answer
    x = 11,173.88

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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.