Home / 38,287.12-57,430.64-11,993.91

Finding the Fourth Proportional to 38,287.12, 57,430.64 and 11,993.91

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Solution

The fourth proportional to 38,287.12, 57,430.64 and 11,993.91 is: 17,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,287.12 : 57,430.64 = 11,993.91 : x
  2. Step 2: Convert to fraction form
    38,287.12/57,430.64 = 11,993.91/x
  3. Step 3: Cross multiply
    38,287.12x = 57,430.64 × 11,993.91
  4. Step 4: Simplify right side
    38,287.12x = 688,817,867.43
  5. Step 5: Solve for x
    x = 688,817,867.43/38,287.12
  6. Step 6: Final answer
    x = 17,990.85

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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.