Home / 20,903.10-31,353.43-15,286.46

Finding the Fourth Proportional to 20,903.10, 31,353.43 and 15,286.46

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Solution

The fourth proportional to 20,903.10, 31,353.43 and 15,286.46 is: 22,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.10 : 31,353.43 = 15,286.46 : x
  2. Step 2: Convert to fraction form
    20,903.10/31,353.43 = 15,286.46/x
  3. Step 3: Cross multiply
    20,903.10x = 31,353.43 × 15,286.46
  4. Step 4: Simplify right side
    20,903.10x = 479,282,787.24
  5. Step 5: Solve for x
    x = 479,282,787.24/20,903.10
  6. Step 6: Final answer
    x = 22,928.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.