Home / 20,835.64-31,275.06-13,958.20

Finding the Fourth Proportional to 20,835.64, 31,275.06 and 13,958.20

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Solution

The fourth proportional to 20,835.64, 31,275.06 and 13,958.20 is: 20,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.64 : 31,275.06 = 13,958.20 : x
  2. Step 2: Convert to fraction form
    20,835.64/31,275.06 = 13,958.20/x
  3. Step 3: Cross multiply
    20,835.64x = 31,275.06 × 13,958.20
  4. Step 4: Simplify right side
    20,835.64x = 436,543,542.49
  5. Step 5: Solve for x
    x = 436,543,542.49/20,835.64
  6. Step 6: Final answer
    x = 20,951.77

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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.