Home / 30,432.79-41,989.57-17,855.11

Finding the Fourth Proportional to 30,432.79, 41,989.57 and 17,855.11

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Solution

The fourth proportional to 30,432.79, 41,989.57 and 17,855.11 is: 24,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,432.79 : 41,989.57 = 17,855.11 : x
  2. Step 2: Convert to fraction form
    30,432.79/41,989.57 = 17,855.11/x
  3. Step 3: Cross multiply
    30,432.79x = 41,989.57 × 17,855.11
  4. Step 4: Simplify right side
    30,432.79x = 749,728,391.20
  5. Step 5: Solve for x
    x = 749,728,391.20/30,432.79
  6. Step 6: Final answer
    x = 24,635.55

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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.