Home / 31,363.76-43,302.26-19,439.75

Finding the Fourth Proportional to 31,363.76, 43,302.26 and 19,439.75

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Solution

The fourth proportional to 31,363.76, 43,302.26 and 19,439.75 is: 26,839.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,363.76 : 43,302.26 = 19,439.75 : x
  2. Step 2: Convert to fraction form
    31,363.76/43,302.26 = 19,439.75/x
  3. Step 3: Cross multiply
    31,363.76x = 43,302.26 × 19,439.75
  4. Step 4: Simplify right side
    31,363.76x = 841,785,108.84
  5. Step 5: Solve for x
    x = 841,785,108.84/31,363.76
  6. Step 6: Final answer
    x = 26,839.42

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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.