Home / 21,050.42-31,598.37-18,725.31

Finding the Fourth Proportional to 21,050.42, 31,598.37 and 18,725.31

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Solution

The fourth proportional to 21,050.42, 31,598.37 and 18,725.31 is: 28,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.42 : 31,598.37 = 18,725.31 : x
  2. Step 2: Convert to fraction form
    21,050.42/31,598.37 = 18,725.31/x
  3. Step 3: Cross multiply
    21,050.42x = 31,598.37 × 18,725.31
  4. Step 4: Simplify right side
    21,050.42x = 591,689,273.74
  5. Step 5: Solve for x
    x = 591,689,273.74/21,050.42
  6. Step 6: Final answer
    x = 28,108.20

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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.