Home / 21,110.86-31,668.12-5,528.50

Finding the Fourth Proportional to 21,110.86, 31,668.12 and 5,528.50

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Solution

The fourth proportional to 21,110.86, 31,668.12 and 5,528.50 is: 8,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.86 : 31,668.12 = 5,528.50 : x
  2. Step 2: Convert to fraction form
    21,110.86/31,668.12 = 5,528.50/x
  3. Step 3: Cross multiply
    21,110.86x = 31,668.12 × 5,528.50
  4. Step 4: Simplify right side
    21,110.86x = 175,077,201.42
  5. Step 5: Solve for x
    x = 175,077,201.42/21,110.86
  6. Step 6: Final answer
    x = 8,293.23

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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.