Home / 31,438.84-43,392.20-19,946.28

Finding the Fourth Proportional to 31,438.84, 43,392.20 and 19,946.28

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Solution

The fourth proportional to 31,438.84, 43,392.20 and 19,946.28 is: 27,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.84 : 43,392.20 = 19,946.28 : x
  2. Step 2: Convert to fraction form
    31,438.84/43,392.20 = 19,946.28/x
  3. Step 3: Cross multiply
    31,438.84x = 43,392.20 × 19,946.28
  4. Step 4: Simplify right side
    31,438.84x = 865,512,971.02
  5. Step 5: Solve for x
    x = 865,512,971.02/31,438.84
  6. Step 6: Final answer
    x = 27,530.05

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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.