Home / 20,855.32-31,282.98-5,272.94

Finding the Fourth Proportional to 20,855.32, 31,282.98 and 5,272.94

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Solution

The fourth proportional to 20,855.32, 31,282.98 and 5,272.94 is: 7,909.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.32 : 31,282.98 = 5,272.94 : x
  2. Step 2: Convert to fraction form
    20,855.32/31,282.98 = 5,272.94/x
  3. Step 3: Cross multiply
    20,855.32x = 31,282.98 × 5,272.94
  4. Step 4: Simplify right side
    20,855.32x = 164,953,250.20
  5. Step 5: Solve for x
    x = 164,953,250.20/20,855.32
  6. Step 6: Final answer
    x = 7,909.41

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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.