Home / 38,681.75-58,023.44-12,386.42

Finding the Fourth Proportional to 38,681.75, 58,023.44 and 12,386.42

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Solution

The fourth proportional to 38,681.75, 58,023.44 and 12,386.42 is: 18,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,681.75 : 58,023.44 = 12,386.42 : x
  2. Step 2: Convert to fraction form
    38,681.75/58,023.44 = 12,386.42/x
  3. Step 3: Cross multiply
    38,681.75x = 58,023.44 × 12,386.42
  4. Step 4: Simplify right side
    38,681.75x = 718,702,376.60
  5. Step 5: Solve for x
    x = 718,702,376.60/38,681.75
  6. Step 6: Final answer
    x = 18,579.88

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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.