Home / 31,436.92-43,392.15-18,699.07

Finding the Fourth Proportional to 31,436.92, 43,392.15 and 18,699.07

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Solution

The fourth proportional to 31,436.92, 43,392.15 and 18,699.07 is: 25,810.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,436.92 : 43,392.15 = 18,699.07 : x
  2. Step 2: Convert to fraction form
    31,436.92/43,392.15 = 18,699.07/x
  3. Step 3: Cross multiply
    31,436.92x = 43,392.15 × 18,699.07
  4. Step 4: Simplify right side
    31,436.92x = 811,392,850.30
  5. Step 5: Solve for x
    x = 811,392,850.30/31,436.92
  6. Step 6: Final answer
    x = 25,810.19

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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.