Home / 21,209.24-31,813.88-6,417.84

Finding the Fourth Proportional to 21,209.24, 31,813.88 and 6,417.84

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Solution

The fourth proportional to 21,209.24, 31,813.88 and 6,417.84 is: 9,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.24 : 31,813.88 = 6,417.84 : x
  2. Step 2: Convert to fraction form
    21,209.24/31,813.88 = 6,417.84/x
  3. Step 3: Cross multiply
    21,209.24x = 31,813.88 × 6,417.84
  4. Step 4: Simplify right side
    21,209.24x = 204,176,391.62
  5. Step 5: Solve for x
    x = 204,176,391.62/21,209.24
  6. Step 6: Final answer
    x = 9,626.77

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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.