Home / 35,478.20-48,968.46-21,328.31

Finding the Fourth Proportional to 35,478.20, 48,968.46 and 21,328.31

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Solution

The fourth proportional to 35,478.20, 48,968.46 and 21,328.31 is: 29,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,478.20 : 48,968.46 = 21,328.31 : x
  2. Step 2: Convert to fraction form
    35,478.20/48,968.46 = 21,328.31/x
  3. Step 3: Cross multiply
    35,478.20x = 48,968.46 × 21,328.31
  4. Step 4: Simplify right side
    35,478.20x = 1,044,414,617.52
  5. Step 5: Solve for x
    x = 1,044,414,617.52/35,478.20
  6. Step 6: Final answer
    x = 29,438.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.