Home / 21,237.36-31,772.21-18,744.18

Finding the Fourth Proportional to 21,237.36, 31,772.21 and 18,744.18

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Solution

The fourth proportional to 21,237.36, 31,772.21 and 18,744.18 is: 28,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.36 : 31,772.21 = 18,744.18 : x
  2. Step 2: Convert to fraction form
    21,237.36/31,772.21 = 18,744.18/x
  3. Step 3: Cross multiply
    21,237.36x = 31,772.21 × 18,744.18
  4. Step 4: Simplify right side
    21,237.36x = 595,543,929.52
  5. Step 5: Solve for x
    x = 595,543,929.52/21,237.36
  6. Step 6: Final answer
    x = 28,042.28

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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.