Home / 13,998.89-19,318.70-7,711.27

Finding the Fourth Proportional to 13,998.89, 19,318.70 and 7,711.27

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Solution

The fourth proportional to 13,998.89, 19,318.70 and 7,711.27 is: 10,641.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.89 : 19,318.70 = 7,711.27 : x
  2. Step 2: Convert to fraction form
    13,998.89/19,318.70 = 7,711.27/x
  3. Step 3: Cross multiply
    13,998.89x = 19,318.70 × 7,711.27
  4. Step 4: Simplify right side
    13,998.89x = 148,971,711.75
  5. Step 5: Solve for x
    x = 148,971,711.75/13,998.89
  6. Step 6: Final answer
    x = 10,641.68

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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.