Home / 13,559.67-18,711.78-7,894.56

Finding the Fourth Proportional to 13,559.67, 18,711.78 and 7,894.56

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Solution

The fourth proportional to 13,559.67, 18,711.78 and 7,894.56 is: 10,894.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.67 : 18,711.78 = 7,894.56 : x
  2. Step 2: Convert to fraction form
    13,559.67/18,711.78 = 7,894.56/x
  3. Step 3: Cross multiply
    13,559.67x = 18,711.78 × 7,894.56
  4. Step 4: Simplify right side
    13,559.67x = 147,721,230.44
  5. Step 5: Solve for x
    x = 147,721,230.44/13,559.67
  6. Step 6: Final answer
    x = 10,894.17

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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.