Home / 21,150.09-31,725.50-8,008.65

Finding the Fourth Proportional to 21,150.09, 31,725.50 and 8,008.65

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Solution

The fourth proportional to 21,150.09, 31,725.50 and 8,008.65 is: 12,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.09 : 31,725.50 = 8,008.65 : x
  2. Step 2: Convert to fraction form
    21,150.09/31,725.50 = 8,008.65/x
  3. Step 3: Cross multiply
    21,150.09x = 31,725.50 × 8,008.65
  4. Step 4: Simplify right side
    21,150.09x = 254,078,385.53
  5. Step 5: Solve for x
    x = 254,078,385.53/21,150.09
  6. Step 6: Final answer
    x = 12,013.11

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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.