Home / 38,281.24-57,422.73-11,986.78

Finding the Fourth Proportional to 38,281.24, 57,422.73 and 11,986.78

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Solution

The fourth proportional to 38,281.24, 57,422.73 and 11,986.78 is: 17,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,281.24 : 57,422.73 = 11,986.78 : x
  2. Step 2: Convert to fraction form
    38,281.24/57,422.73 = 11,986.78/x
  3. Step 3: Cross multiply
    38,281.24x = 57,422.73 × 11,986.78
  4. Step 4: Simplify right side
    38,281.24x = 688,313,631.51
  5. Step 5: Solve for x
    x = 688,313,631.51/38,281.24
  6. Step 6: Final answer
    x = 17,980.44

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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.