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Finding the Fourth Proportional to 28,381.50, 39,101.27 and 22,410.99

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Solution

The fourth proportional to 28,381.50, 39,101.27 and 22,410.99 is: 30,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.50 : 39,101.27 = 22,410.99 : x
  2. Step 2: Convert to fraction form
    28,381.50/39,101.27 = 22,410.99/x
  3. Step 3: Cross multiply
    28,381.50x = 39,101.27 × 22,410.99
  4. Step 4: Simplify right side
    28,381.50x = 876,298,058.90
  5. Step 5: Solve for x
    x = 876,298,058.90/28,381.50
  6. Step 6: Final answer
    x = 30,875.68

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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.