Home / 30,539.78-42,170.57-22,972.99

Finding the Fourth Proportional to 30,539.78, 42,170.57 and 22,972.99

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Solution

The fourth proportional to 30,539.78, 42,170.57 and 22,972.99 is: 31,722.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,539.78 : 42,170.57 = 22,972.99 : x
  2. Step 2: Convert to fraction form
    30,539.78/42,170.57 = 22,972.99/x
  3. Step 3: Cross multiply
    30,539.78x = 42,170.57 × 22,972.99
  4. Step 4: Simplify right side
    30,539.78x = 968,784,275.66
  5. Step 5: Solve for x
    x = 968,784,275.66/30,539.78
  6. Step 6: Final answer
    x = 31,722.04

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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.