Home / 35,138.77-48,467.61-21,520.45

Finding the Fourth Proportional to 35,138.77, 48,467.61 and 21,520.45

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Solution

The fourth proportional to 35,138.77, 48,467.61 and 21,520.45 is: 29,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,138.77 : 48,467.61 = 21,520.45 : x
  2. Step 2: Convert to fraction form
    35,138.77/48,467.61 = 21,520.45/x
  3. Step 3: Cross multiply
    35,138.77x = 48,467.61 × 21,520.45
  4. Step 4: Simplify right side
    35,138.77x = 1,043,044,777.62
  5. Step 5: Solve for x
    x = 1,043,044,777.62/35,138.77
  6. Step 6: Final answer
    x = 29,683.59

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1.5x scale

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.