Home / 31,434.17-43,376.96-18,686.69

Finding the Fourth Proportional to 31,434.17, 43,376.96 and 18,686.69

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Solution

The fourth proportional to 31,434.17, 43,376.96 and 18,686.69 is: 25,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,434.17 : 43,376.96 = 18,686.69 : x
  2. Step 2: Convert to fraction form
    31,434.17/43,376.96 = 18,686.69/x
  3. Step 3: Cross multiply
    31,434.17x = 43,376.96 × 18,686.69
  4. Step 4: Simplify right side
    31,434.17x = 810,571,494.34
  5. Step 5: Solve for x
    x = 810,571,494.34/31,434.17
  6. Step 6: Final answer
    x = 25,786.32

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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.