Home / 20,956.37-31,455.21-15,394.10

Finding the Fourth Proportional to 20,956.37, 31,455.21 and 15,394.10

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Solution

The fourth proportional to 20,956.37, 31,455.21 and 15,394.10 is: 23,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.37 : 31,455.21 = 15,394.10 : x
  2. Step 2: Convert to fraction form
    20,956.37/31,455.21 = 15,394.10/x
  3. Step 3: Cross multiply
    20,956.37x = 31,455.21 × 15,394.10
  4. Step 4: Simplify right side
    20,956.37x = 484,224,490.98
  5. Step 5: Solve for x
    x = 484,224,490.98/20,956.37
  6. Step 6: Final answer
    x = 23,106.32

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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.