Home / 13,113.52-19,660.55-7,918.18

Finding the Fourth Proportional to 13,113.52, 19,660.55 and 7,918.18

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Solution

The fourth proportional to 13,113.52, 19,660.55 and 7,918.18 is: 11,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.52 : 19,660.55 = 7,918.18 : x
  2. Step 2: Convert to fraction form
    13,113.52/19,660.55 = 7,918.18/x
  3. Step 3: Cross multiply
    13,113.52x = 19,660.55 × 7,918.18
  4. Step 4: Simplify right side
    13,113.52x = 155,675,773.80
  5. Step 5: Solve for x
    x = 155,675,773.80/13,113.52
  6. Step 6: Final answer
    x = 11,871.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.