Home / 31,220.70-43,107.12-19,300.38

Finding the Fourth Proportional to 31,220.70, 43,107.12 and 19,300.38

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Solution

The fourth proportional to 31,220.70, 43,107.12 and 19,300.38 is: 26,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,220.70 : 43,107.12 = 19,300.38 : x
  2. Step 2: Convert to fraction form
    31,220.70/43,107.12 = 19,300.38/x
  3. Step 3: Cross multiply
    31,220.70x = 43,107.12 × 19,300.38
  4. Step 4: Simplify right side
    31,220.70x = 831,983,796.71
  5. Step 5: Solve for x
    x = 831,983,796.71/31,220.70
  6. Step 6: Final answer
    x = 26,648.47

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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.