Home / 31,437.66-43,376.04-18,690.12

Finding the Fourth Proportional to 31,437.66, 43,376.04 and 18,690.12

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Solution

The fourth proportional to 31,437.66, 43,376.04 and 18,690.12 is: 25,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.66 : 43,376.04 = 18,690.12 : x
  2. Step 2: Convert to fraction form
    31,437.66/43,376.04 = 18,690.12/x
  3. Step 3: Cross multiply
    31,437.66x = 43,376.04 × 18,690.12
  4. Step 4: Simplify right side
    31,437.66x = 810,703,392.72
  5. Step 5: Solve for x
    x = 810,703,392.72/31,437.66
  6. Step 6: Final answer
    x = 25,787.65

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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.