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Finding the Fourth Proportional to 31,366.68, 43,294.32 and 19,423.24

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Solution

The fourth proportional to 31,366.68, 43,294.32 and 19,423.24 is: 26,809.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,366.68 : 43,294.32 = 19,423.24 : x
  2. Step 2: Convert to fraction form
    31,366.68/43,294.32 = 19,423.24/x
  3. Step 3: Cross multiply
    31,366.68x = 43,294.32 × 19,423.24
  4. Step 4: Simplify right side
    31,366.68x = 840,915,968.00
  5. Step 5: Solve for x
    x = 840,915,968.00/31,366.68
  6. Step 6: Final answer
    x = 26,809.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.