Home / 21,877.65-30,180.64-14,320.65

Finding the Fourth Proportional to 21,877.65, 30,180.64 and 14,320.65

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Solution

The fourth proportional to 21,877.65, 30,180.64 and 14,320.65 is: 19,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.65 : 30,180.64 = 14,320.65 : x
  2. Step 2: Convert to fraction form
    21,877.65/30,180.64 = 14,320.65/x
  3. Step 3: Cross multiply
    21,877.65x = 30,180.64 × 14,320.65
  4. Step 4: Simplify right side
    21,877.65x = 432,206,382.22
  5. Step 5: Solve for x
    x = 432,206,382.22/21,877.65
  6. Step 6: Final answer
    x = 19,755.61

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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.