Home / 31,107.80-42,916.51-19,150.36

Finding the Fourth Proportional to 31,107.80, 42,916.51 and 19,150.36

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Solution

The fourth proportional to 31,107.80, 42,916.51 and 19,150.36 is: 26,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,107.80 : 42,916.51 = 19,150.36 : x
  2. Step 2: Convert to fraction form
    31,107.80/42,916.51 = 19,150.36/x
  3. Step 3: Cross multiply
    31,107.80x = 42,916.51 × 19,150.36
  4. Step 4: Simplify right side
    31,107.80x = 821,866,616.44
  5. Step 5: Solve for x
    x = 821,866,616.44/31,107.80
  6. Step 6: Final answer
    x = 26,419.95

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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.