Home / 38,659.72-57,990.80-18,392.05

Finding the Fourth Proportional to 38,659.72, 57,990.80 and 18,392.05

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Solution

The fourth proportional to 38,659.72, 57,990.80 and 18,392.05 is: 27,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.72 : 57,990.80 = 18,392.05 : x
  2. Step 2: Convert to fraction form
    38,659.72/57,990.80 = 18,392.05/x
  3. Step 3: Cross multiply
    38,659.72x = 57,990.80 × 18,392.05
  4. Step 4: Simplify right side
    38,659.72x = 1,066,569,693.14
  5. Step 5: Solve for x
    x = 1,066,569,693.14/38,659.72
  6. Step 6: Final answer
    x = 27,588.66

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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.