Home / 31,344.76-43,276.04-19,420.75

Finding the Fourth Proportional to 31,344.76, 43,276.04 and 19,420.75

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Solution

The fourth proportional to 31,344.76, 43,276.04 and 19,420.75 is: 26,813.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,344.76 : 43,276.04 = 19,420.75 : x
  2. Step 2: Convert to fraction form
    31,344.76/43,276.04 = 19,420.75/x
  3. Step 3: Cross multiply
    31,344.76x = 43,276.04 × 19,420.75
  4. Step 4: Simplify right side
    31,344.76x = 840,453,056.73
  5. Step 5: Solve for x
    x = 840,453,056.73/31,344.76
  6. Step 6: Final answer
    x = 26,813.19

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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.