Home / 31,646.70-43,667.10-19,713.78

Finding the Fourth Proportional to 31,646.70, 43,667.10 and 19,713.78

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Solution

The fourth proportional to 31,646.70, 43,667.10 and 19,713.78 is: 27,201.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.70 : 43,667.10 = 19,713.78 : x
  2. Step 2: Convert to fraction form
    31,646.70/43,667.10 = 19,713.78/x
  3. Step 3: Cross multiply
    31,646.70x = 43,667.10 × 19,713.78
  4. Step 4: Simplify right side
    31,646.70x = 860,843,602.64
  5. Step 5: Solve for x
    x = 860,843,602.64/31,646.70
  6. Step 6: Final answer
    x = 27,201.69

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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.