Home / 21,237.86-31,772.95-18,744.68

Finding the Fourth Proportional to 21,237.86, 31,772.95 and 18,744.68

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Solution

The fourth proportional to 21,237.86, 31,772.95 and 18,744.68 is: 28,043.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.86 : 31,772.95 = 18,744.68 : x
  2. Step 2: Convert to fraction form
    21,237.86/31,772.95 = 18,744.68/x
  3. Step 3: Cross multiply
    21,237.86x = 31,772.95 × 18,744.68
  4. Step 4: Simplify right side
    21,237.86x = 595,573,780.41
  5. Step 5: Solve for x
    x = 595,573,780.41/21,237.86
  6. Step 6: Final answer
    x = 28,043.02

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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.