Home / 30,156.54-41,616.08-18,217.68

Finding the Fourth Proportional to 30,156.54, 41,616.08 and 18,217.68

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Solution

The fourth proportional to 30,156.54, 41,616.08 and 18,217.68 is: 25,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.54 : 41,616.08 = 18,217.68 : x
  2. Step 2: Convert to fraction form
    30,156.54/41,616.08 = 18,217.68/x
  3. Step 3: Cross multiply
    30,156.54x = 41,616.08 × 18,217.68
  4. Step 4: Simplify right side
    30,156.54x = 758,148,428.29
  5. Step 5: Solve for x
    x = 758,148,428.29/30,156.54
  6. Step 6: Final answer
    x = 25,140.43

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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.