Home / 21,190.38-31,790.95-14,962.50

Finding the Fourth Proportional to 21,190.38, 31,790.95 and 14,962.50

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Solution

The fourth proportional to 21,190.38, 31,790.95 and 14,962.50 is: 22,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.38 : 31,790.95 = 14,962.50 : x
  2. Step 2: Convert to fraction form
    21,190.38/31,790.95 = 14,962.50/x
  3. Step 3: Cross multiply
    21,190.38x = 31,790.95 × 14,962.50
  4. Step 4: Simplify right side
    21,190.38x = 475,672,089.38
  5. Step 5: Solve for x
    x = 475,672,089.38/21,190.38
  6. Step 6: Final answer
    x = 22,447.55

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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.