Home / 18,972.30-28,467.09-7,887.18

Finding the Fourth Proportional to 18,972.30, 28,467.09 and 7,887.18

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Solution

The fourth proportional to 18,972.30, 28,467.09 and 7,887.18 is: 11,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.30 : 28,467.09 = 7,887.18 : x
  2. Step 2: Convert to fraction form
    18,972.30/28,467.09 = 7,887.18/x
  3. Step 3: Cross multiply
    18,972.30x = 28,467.09 × 7,887.18
  4. Step 4: Simplify right side
    18,972.30x = 224,525,062.91
  5. Step 5: Solve for x
    x = 224,525,062.91/18,972.30
  6. Step 6: Final answer
    x = 11,834.36

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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.