Home / 12,320.44-18,478.68-3,436

Finding the Fourth Proportional to 12,320.44, 18,478.68 and 3,436

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Solution

The fourth proportional to 12,320.44, 18,478.68 and 3,436 is: 5,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.44 : 18,478.68 = 3,436 : x
  2. Step 2: Convert to fraction form
    12,320.44/18,478.68 = 3,436/x
  3. Step 3: Cross multiply
    12,320.44x = 18,478.68 × 3,436
  4. Step 4: Simplify right side
    12,320.44x = 63,492,744.48
  5. Step 5: Solve for x
    x = 63,492,744.48/12,320.44
  6. Step 6: Final answer
    x = 5,153.45

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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.