Home / 31,007.95-42,787.64-18,260.37

Finding the Fourth Proportional to 31,007.95, 42,787.64 and 18,260.37

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Solution

The fourth proportional to 31,007.95, 42,787.64 and 18,260.37 is: 25,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,007.95 : 42,787.64 = 18,260.37 : x
  2. Step 2: Convert to fraction form
    31,007.95/42,787.64 = 18,260.37/x
  3. Step 3: Cross multiply
    31,007.95x = 42,787.64 × 18,260.37
  4. Step 4: Simplify right side
    31,007.95x = 781,318,183.48
  5. Step 5: Solve for x
    x = 781,318,183.48/31,007.95
  6. Step 6: Final answer
    x = 25,197.35

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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.