Home / 21,130.16-31,693.95-6,339.33

Finding the Fourth Proportional to 21,130.16, 31,693.95 and 6,339.33

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Solution

The fourth proportional to 21,130.16, 31,693.95 and 6,339.33 is: 9,508.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.16 : 31,693.95 = 6,339.33 : x
  2. Step 2: Convert to fraction form
    21,130.16/31,693.95 = 6,339.33/x
  3. Step 3: Cross multiply
    21,130.16x = 31,693.95 × 6,339.33
  4. Step 4: Simplify right side
    21,130.16x = 200,918,408.05
  5. Step 5: Solve for x
    x = 200,918,408.05/21,130.16
  6. Step 6: Final answer
    x = 9,508.61

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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.