Home / 21,299.19-31,951.88-6,506.21

Finding the Fourth Proportional to 21,299.19, 31,951.88 and 6,506.21

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Solution

The fourth proportional to 21,299.19, 31,951.88 and 6,506.21 is: 9,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.19 : 31,951.88 = 6,506.21 : x
  2. Step 2: Convert to fraction form
    21,299.19/31,951.88 = 6,506.21/x
  3. Step 3: Cross multiply
    21,299.19x = 31,951.88 × 6,506.21
  4. Step 4: Simplify right side
    21,299.19x = 207,885,448.88
  5. Step 5: Solve for x
    x = 207,885,448.88/21,299.19
  6. Step 6: Final answer
    x = 9,760.25

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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.