Home / 31,355.46-43,256.79-18,772.92

Finding the Fourth Proportional to 31,355.46, 43,256.79 and 18,772.92

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Solution

The fourth proportional to 31,355.46, 43,256.79 and 18,772.92 is: 25,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.46 : 43,256.79 = 18,772.92 : x
  2. Step 2: Convert to fraction form
    31,355.46/43,256.79 = 18,772.92/x
  3. Step 3: Cross multiply
    31,355.46x = 43,256.79 × 18,772.92
  4. Step 4: Simplify right side
    31,355.46x = 812,056,258.13
  5. Step 5: Solve for x
    x = 812,056,258.13/31,355.46
  6. Step 6: Final answer
    x = 25,898.40

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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.