Home / 31,730.19-43,787.64-18,983.89

Finding the Fourth Proportional to 31,730.19, 43,787.64 and 18,983.89

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Solution

The fourth proportional to 31,730.19, 43,787.64 and 18,983.89 is: 26,197.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,730.19 : 43,787.64 = 18,983.89 : x
  2. Step 2: Convert to fraction form
    31,730.19/43,787.64 = 18,983.89/x
  3. Step 3: Cross multiply
    31,730.19x = 43,787.64 × 18,983.89
  4. Step 4: Simplify right side
    31,730.19x = 831,259,883.41
  5. Step 5: Solve for x
    x = 831,259,883.41/31,730.19
  6. Step 6: Final answer
    x = 26,197.76

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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.