Home / 31,834.14-43,949.43-21,258.78

Finding the Fourth Proportional to 31,834.14, 43,949.43 and 21,258.78

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Solution

The fourth proportional to 31,834.14, 43,949.43 and 21,258.78 is: 29,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,834.14 : 43,949.43 = 21,258.78 : x
  2. Step 2: Convert to fraction form
    31,834.14/43,949.43 = 21,258.78/x
  3. Step 3: Cross multiply
    31,834.14x = 43,949.43 × 21,258.78
  4. Step 4: Simplify right side
    31,834.14x = 934,311,263.50
  5. Step 5: Solve for x
    x = 934,311,263.50/31,834.14
  6. Step 6: Final answer
    x = 29,349.35

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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.