Home / 21,887.57-30,204.66-12,456.65

Finding the Fourth Proportional to 21,887.57, 30,204.66 and 12,456.65

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Solution

The fourth proportional to 21,887.57, 30,204.66 and 12,456.65 is: 17,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.57 : 30,204.66 = 12,456.65 : x
  2. Step 2: Convert to fraction form
    21,887.57/30,204.66 = 12,456.65/x
  3. Step 3: Cross multiply
    21,887.57x = 30,204.66 × 12,456.65
  4. Step 4: Simplify right side
    21,887.57x = 376,248,877.99
  5. Step 5: Solve for x
    x = 376,248,877.99/21,887.57
  6. Step 6: Final answer
    x = 17,190.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.