Home / 39,272.84-58,913.35-12,612.09

Finding the Fourth Proportional to 39,272.84, 58,913.35 and 12,612.09

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Solution

The fourth proportional to 39,272.84, 58,913.35 and 12,612.09 is: 18,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,272.84 : 58,913.35 = 12,612.09 : x
  2. Step 2: Convert to fraction form
    39,272.84/58,913.35 = 12,612.09/x
  3. Step 3: Cross multiply
    39,272.84x = 58,913.35 × 12,612.09
  4. Step 4: Simplify right side
    39,272.84x = 743,020,472.40
  5. Step 5: Solve for x
    x = 743,020,472.40/39,272.84
  6. Step 6: Final answer
    x = 18,919.45

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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.