Home / 31,118.37-42,931.13-19,160.97

Finding the Fourth Proportional to 31,118.37, 42,931.13 and 19,160.97

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Solution

The fourth proportional to 31,118.37, 42,931.13 and 19,160.97 is: 26,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,118.37 : 42,931.13 = 19,160.97 : x
  2. Step 2: Convert to fraction form
    31,118.37/42,931.13 = 19,160.97/x
  3. Step 3: Cross multiply
    31,118.37x = 42,931.13 × 19,160.97
  4. Step 4: Simplify right side
    31,118.37x = 822,601,998.19
  5. Step 5: Solve for x
    x = 822,601,998.19/31,118.37
  6. Step 6: Final answer
    x = 26,434.61

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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.