Home / 35,521.70-48,989.85-21,371.90

Finding the Fourth Proportional to 35,521.70, 48,989.85 and 21,371.90

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Solution

The fourth proportional to 35,521.70, 48,989.85 and 21,371.90 is: 29,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,521.70 : 48,989.85 = 21,371.90 : x
  2. Step 2: Convert to fraction form
    35,521.70/48,989.85 = 21,371.90/x
  3. Step 3: Cross multiply
    35,521.70x = 48,989.85 × 21,371.90
  4. Step 4: Simplify right side
    35,521.70x = 1,047,006,175.22
  5. Step 5: Solve for x
    x = 1,047,006,175.22/35,521.70
  6. Step 6: Final answer
    x = 29,475.11

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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.