Home / 31,113.28-42,937.17-19,015.72

Finding the Fourth Proportional to 31,113.28, 42,937.17 and 19,015.72

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Solution

The fourth proportional to 31,113.28, 42,937.17 and 19,015.72 is: 26,242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,113.28 : 42,937.17 = 19,015.72 : x
  2. Step 2: Convert to fraction form
    31,113.28/42,937.17 = 19,015.72/x
  3. Step 3: Cross multiply
    31,113.28x = 42,937.17 × 19,015.72
  4. Step 4: Simplify right side
    31,113.28x = 816,481,202.31
  5. Step 5: Solve for x
    x = 816,481,202.31/31,113.28
  6. Step 6: Final answer
    x = 26,242.21

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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.