Home / 30,391.46-41,972.55-23,143.85

Finding the Fourth Proportional to 30,391.46, 41,972.55 and 23,143.85

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Solution

The fourth proportional to 30,391.46, 41,972.55 and 23,143.85 is: 31,963.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.46 : 41,972.55 = 23,143.85 : x
  2. Step 2: Convert to fraction form
    30,391.46/41,972.55 = 23,143.85/x
  3. Step 3: Cross multiply
    30,391.46x = 41,972.55 × 23,143.85
  4. Step 4: Simplify right side
    30,391.46x = 971,406,401.32
  5. Step 5: Solve for x
    x = 971,406,401.32/30,391.46
  6. Step 6: Final answer
    x = 31,963.14

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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.