Home / 43,308-64,972.94-12,143.25

Finding the Fourth Proportional to 43,308, 64,972.94 and 12,143.25

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Solution

The fourth proportional to 43,308, 64,972.94 and 12,143.25 is: 18,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,308 : 64,972.94 = 12,143.25 : x
  2. Step 2: Convert to fraction form
    43,308/64,972.94 = 12,143.25/x
  3. Step 3: Cross multiply
    43,308x = 64,972.94 × 12,143.25
  4. Step 4: Simplify right side
    43,308x = 788,982,592.94
  5. Step 5: Solve for x
    x = 788,982,592.94/43,308
  6. Step 6: Final answer
    x = 18,217.94

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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.