Home / 21,268.91-31,902.28-6,477.50

Finding the Fourth Proportional to 21,268.91, 31,902.28 and 6,477.50

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Solution

The fourth proportional to 21,268.91, 31,902.28 and 6,477.50 is: 9,715.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.91 : 31,902.28 = 6,477.50 : x
  2. Step 2: Convert to fraction form
    21,268.91/31,902.28 = 6,477.50/x
  3. Step 3: Cross multiply
    21,268.91x = 31,902.28 × 6,477.50
  4. Step 4: Simplify right side
    21,268.91x = 206,647,018.70
  5. Step 5: Solve for x
    x = 206,647,018.70/21,268.91
  6. Step 6: Final answer
    x = 9,715.92

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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.