Home / 15,835.68-21,851.46-8,761.50

Finding the Fourth Proportional to 15,835.68, 21,851.46 and 8,761.50

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Solution

The fourth proportional to 15,835.68, 21,851.46 and 8,761.50 is: 12,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.68 : 21,851.46 = 8,761.50 : x
  2. Step 2: Convert to fraction form
    15,835.68/21,851.46 = 8,761.50/x
  3. Step 3: Cross multiply
    15,835.68x = 21,851.46 × 8,761.50
  4. Step 4: Simplify right side
    15,835.68x = 191,451,566.79
  5. Step 5: Solve for x
    x = 191,451,566.79/15,835.68
  6. Step 6: Final answer
    x = 12,089.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.