Home / 13,306.57-18,366.60-7,860.42

Finding the Fourth Proportional to 13,306.57, 18,366.60 and 7,860.42

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Solution

The fourth proportional to 13,306.57, 18,366.60 and 7,860.42 is: 10,849.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.57 : 18,366.60 = 7,860.42 : x
  2. Step 2: Convert to fraction form
    13,306.57/18,366.60 = 7,860.42/x
  3. Step 3: Cross multiply
    13,306.57x = 18,366.60 × 7,860.42
  4. Step 4: Simplify right side
    13,306.57x = 144,369,189.97
  5. Step 5: Solve for x
    x = 144,369,189.97/13,306.57
  6. Step 6: Final answer
    x = 10,849.47

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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.