Home / 31,151.71-43,004.78-19,221.62

Finding the Fourth Proportional to 31,151.71, 43,004.78 and 19,221.62

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Solution

The fourth proportional to 31,151.71, 43,004.78 and 19,221.62 is: 26,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,151.71 : 43,004.78 = 19,221.62 : x
  2. Step 2: Convert to fraction form
    31,151.71/43,004.78 = 19,221.62/x
  3. Step 3: Cross multiply
    31,151.71x = 43,004.78 × 19,221.62
  4. Step 4: Simplify right side
    31,151.71x = 826,621,539.34
  5. Step 5: Solve for x
    x = 826,621,539.34/31,151.71
  6. Step 6: Final answer
    x = 26,535.35

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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.