Home / 20,937.06-31,376.70-15,393.42

Finding the Fourth Proportional to 20,937.06, 31,376.70 and 15,393.42

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Solution

The fourth proportional to 20,937.06, 31,376.70 and 15,393.42 is: 23,068.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.06 : 31,376.70 = 15,393.42 : x
  2. Step 2: Convert to fraction form
    20,937.06/31,376.70 = 15,393.42/x
  3. Step 3: Cross multiply
    20,937.06x = 31,376.70 × 15,393.42
  4. Step 4: Simplify right side
    20,937.06x = 482,994,721.31
  5. Step 5: Solve for x
    x = 482,994,721.31/20,937.06
  6. Step 6: Final answer
    x = 23,068.89

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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.