Home / 31,439.84-43,393.58-19,947.28

Finding the Fourth Proportional to 31,439.84, 43,393.58 and 19,947.28

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Solution

The fourth proportional to 31,439.84, 43,393.58 and 19,947.28 is: 27,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.84 : 43,393.58 = 19,947.28 : x
  2. Step 2: Convert to fraction form
    31,439.84/43,393.58 = 19,947.28/x
  3. Step 3: Cross multiply
    31,439.84x = 43,393.58 × 19,947.28
  4. Step 4: Simplify right side
    31,439.84x = 865,583,890.46
  5. Step 5: Solve for x
    x = 865,583,890.46/31,439.84
  6. Step 6: Final answer
    x = 27,531.43

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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.