Home / 17,918.71-26,878.14-5,438.85

Finding the Fourth Proportional to 17,918.71, 26,878.14 and 5,438.85

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Solution

The fourth proportional to 17,918.71, 26,878.14 and 5,438.85 is: 8,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,918.71 : 26,878.14 = 5,438.85 : x
  2. Step 2: Convert to fraction form
    17,918.71/26,878.14 = 5,438.85/x
  3. Step 3: Cross multiply
    17,918.71x = 26,878.14 × 5,438.85
  4. Step 4: Simplify right side
    17,918.71x = 146,186,171.74
  5. Step 5: Solve for x
    x = 146,186,171.74/17,918.71
  6. Step 6: Final answer
    x = 8,158.30

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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.