Home / 20,664.48-30,988.74-8,810.76

Finding the Fourth Proportional to 20,664.48, 30,988.74 and 8,810.76

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Solution

The fourth proportional to 20,664.48, 30,988.74 and 8,810.76 is: 13,212.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.48 : 30,988.74 = 8,810.76 : x
  2. Step 2: Convert to fraction form
    20,664.48/30,988.74 = 8,810.76/x
  3. Step 3: Cross multiply
    20,664.48x = 30,988.74 × 8,810.76
  4. Step 4: Simplify right side
    20,664.48x = 273,034,350.84
  5. Step 5: Solve for x
    x = 273,034,350.84/20,664.48
  6. Step 6: Final answer
    x = 13,212.74

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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.