Home / 21,068.51-31,608.63-6,277.91

Finding the Fourth Proportional to 21,068.51, 31,608.63 and 6,277.91

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Solution

The fourth proportional to 21,068.51, 31,608.63 and 6,277.91 is: 9,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.51 : 31,608.63 = 6,277.91 : x
  2. Step 2: Convert to fraction form
    21,068.51/31,608.63 = 6,277.91/x
  3. Step 3: Cross multiply
    21,068.51x = 31,608.63 × 6,277.91
  4. Step 4: Simplify right side
    21,068.51x = 198,435,976.32
  5. Step 5: Solve for x
    x = 198,435,976.32/21,068.51
  6. Step 6: Final answer
    x = 9,418.61

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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.