Home / 31,110.39-42,951.40-19,190.03

Finding the Fourth Proportional to 31,110.39, 42,951.40 and 19,190.03

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Solution

The fourth proportional to 31,110.39, 42,951.40 and 19,190.03 is: 26,493.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.39 : 42,951.40 = 19,190.03 : x
  2. Step 2: Convert to fraction form
    31,110.39/42,951.40 = 19,190.03/x
  3. Step 3: Cross multiply
    31,110.39x = 42,951.40 × 19,190.03
  4. Step 4: Simplify right side
    31,110.39x = 824,238,391.81
  5. Step 5: Solve for x
    x = 824,238,391.81/31,110.39
  6. Step 6: Final answer
    x = 26,493.99

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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.