Home / 31,397.84-43,283.40-21,937.04

Finding the Fourth Proportional to 31,397.84, 43,283.40 and 21,937.04

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Solution

The fourth proportional to 31,397.84, 43,283.40 and 21,937.04 is: 30,241.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,397.84 : 43,283.40 = 21,937.04 : x
  2. Step 2: Convert to fraction form
    31,397.84/43,283.40 = 21,937.04/x
  3. Step 3: Cross multiply
    31,397.84x = 43,283.40 × 21,937.04
  4. Step 4: Simplify right side
    31,397.84x = 949,509,677.14
  5. Step 5: Solve for x
    x = 949,509,677.14/31,397.84
  6. Step 6: Final answer
    x = 30,241.24

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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.