Home / 20,926.08-31,382.40-9,239.04

Finding the Fourth Proportional to 20,926.08, 31,382.40 and 9,239.04

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Solution

The fourth proportional to 20,926.08, 31,382.40 and 9,239.04 is: 13,855.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.08 : 31,382.40 = 9,239.04 : x
  2. Step 2: Convert to fraction form
    20,926.08/31,382.40 = 9,239.04/x
  3. Step 3: Cross multiply
    20,926.08x = 31,382.40 × 9,239.04
  4. Step 4: Simplify right side
    20,926.08x = 289,943,248.90
  5. Step 5: Solve for x
    x = 289,943,248.90/20,926.08
  6. Step 6: Final answer
    x = 13,855.59

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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.