Home / 21,872.89-30,176.69-14,323.53

Finding the Fourth Proportional to 21,872.89, 30,176.69 and 14,323.53

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Solution

The fourth proportional to 21,872.89, 30,176.69 and 14,323.53 is: 19,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.89 : 30,176.69 = 14,323.53 : x
  2. Step 2: Convert to fraction form
    21,872.89/30,176.69 = 14,323.53/x
  3. Step 3: Cross multiply
    21,872.89x = 30,176.69 × 14,323.53
  4. Step 4: Simplify right side
    21,872.89x = 432,236,573.63
  5. Step 5: Solve for x
    x = 432,236,573.63/21,872.89
  6. Step 6: Final answer
    x = 19,761.29

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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.