Home / 13,561.68-18,712.20-7,895.76

Finding the Fourth Proportional to 13,561.68, 18,712.20 and 7,895.76

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Solution

The fourth proportional to 13,561.68, 18,712.20 and 7,895.76 is: 10,894.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.68 : 18,712.20 = 7,895.76 : x
  2. Step 2: Convert to fraction form
    13,561.68/18,712.20 = 7,895.76/x
  3. Step 3: Cross multiply
    13,561.68x = 18,712.20 × 7,895.76
  4. Step 4: Simplify right side
    13,561.68x = 147,747,040.27
  5. Step 5: Solve for x
    x = 147,747,040.27/13,561.68
  6. Step 6: Final answer
    x = 10,894.45

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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.