Home / 30,480.15-45,721.23-10,489.44

Finding the Fourth Proportional to 30,480.15, 45,721.23 and 10,489.44

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Solution

The fourth proportional to 30,480.15, 45,721.23 and 10,489.44 is: 15,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.15 : 45,721.23 = 10,489.44 : x
  2. Step 2: Convert to fraction form
    30,480.15/45,721.23 = 10,489.44/x
  3. Step 3: Cross multiply
    30,480.15x = 45,721.23 × 10,489.44
  4. Step 4: Simplify right side
    30,480.15x = 479,590,098.81
  5. Step 5: Solve for x
    x = 479,590,098.81/30,480.15
  6. Step 6: Final answer
    x = 15,734.51

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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.