Home / 13,561.07-18,711.54-7,896.74

Finding the Fourth Proportional to 13,561.07, 18,711.54 and 7,896.74

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Solution

The fourth proportional to 13,561.07, 18,711.54 and 7,896.74 is: 10,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.07 : 18,711.54 = 7,896.74 : x
  2. Step 2: Convert to fraction form
    13,561.07/18,711.54 = 7,896.74/x
  3. Step 3: Cross multiply
    13,561.07x = 18,711.54 × 7,896.74
  4. Step 4: Simplify right side
    13,561.07x = 147,760,072.82
  5. Step 5: Solve for x
    x = 147,760,072.82/13,561.07
  6. Step 6: Final answer
    x = 10,895.90

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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.