Home / 39,281.96-58,932.17-12,986.70

Finding the Fourth Proportional to 39,281.96, 58,932.17 and 12,986.70

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Solution

The fourth proportional to 39,281.96, 58,932.17 and 12,986.70 is: 19,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.96 : 58,932.17 = 12,986.70 : x
  2. Step 2: Convert to fraction form
    39,281.96/58,932.17 = 12,986.70/x
  3. Step 3: Cross multiply
    39,281.96x = 58,932.17 × 12,986.70
  4. Step 4: Simplify right side
    39,281.96x = 765,334,347.21
  5. Step 5: Solve for x
    x = 765,334,347.21/39,281.96
  6. Step 6: Final answer
    x = 19,483.10

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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.