Home / 45,115.10-67,667.78-11,838.50

Finding the Fourth Proportional to 45,115.10, 67,667.78 and 11,838.50

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Solution

The fourth proportional to 45,115.10, 67,667.78 and 11,838.50 is: 17,756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,115.10 : 67,667.78 = 11,838.50 : x
  2. Step 2: Convert to fraction form
    45,115.10/67,667.78 = 11,838.50/x
  3. Step 3: Cross multiply
    45,115.10x = 67,667.78 × 11,838.50
  4. Step 4: Simplify right side
    45,115.10x = 801,085,013.53
  5. Step 5: Solve for x
    x = 801,085,013.53/45,115.10
  6. Step 6: Final answer
    x = 17,756.47

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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.