Home / 31,157.25-42,984.70-19,199.76

Finding the Fourth Proportional to 31,157.25, 42,984.70 and 19,199.76

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Solution

The fourth proportional to 31,157.25, 42,984.70 and 19,199.76 is: 26,488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,157.25 : 42,984.70 = 19,199.76 : x
  2. Step 2: Convert to fraction form
    31,157.25/42,984.70 = 19,199.76/x
  3. Step 3: Cross multiply
    31,157.25x = 42,984.70 × 19,199.76
  4. Step 4: Simplify right side
    31,157.25x = 825,295,923.67
  5. Step 5: Solve for x
    x = 825,295,923.67/31,157.25
  6. Step 6: Final answer
    x = 26,488.09

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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.