Home / 13,561.68-18,716.16-7,898.19

Finding the Fourth Proportional to 13,561.68, 18,716.16 and 7,898.19

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Solution

The fourth proportional to 13,561.68, 18,716.16 and 7,898.19 is: 10,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.68 : 18,716.16 = 7,898.19 : x
  2. Step 2: Convert to fraction form
    13,561.68/18,716.16 = 7,898.19/x
  3. Step 3: Cross multiply
    13,561.68x = 18,716.16 × 7,898.19
  4. Step 4: Simplify right side
    13,561.68x = 147,823,787.75
  5. Step 5: Solve for x
    x = 147,823,787.75/13,561.68
  6. Step 6: Final answer
    x = 10,900.11

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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.