Home / 12,218.70-18,304.47-7,292.28

Finding the Fourth Proportional to 12,218.70, 18,304.47 and 7,292.28

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Solution

The fourth proportional to 12,218.70, 18,304.47 and 7,292.28 is: 10,924.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.70 : 18,304.47 = 7,292.28 : x
  2. Step 2: Convert to fraction form
    12,218.70/18,304.47 = 7,292.28/x
  3. Step 3: Cross multiply
    12,218.70x = 18,304.47 × 7,292.28
  4. Step 4: Simplify right side
    12,218.70x = 133,481,320.49
  5. Step 5: Solve for x
    x = 133,481,320.49/12,218.70
  6. Step 6: Final answer
    x = 10,924.35

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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.