Home / 21,172.95-31,765.77-6,382.35

Finding the Fourth Proportional to 21,172.95, 31,765.77 and 6,382.35

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Solution

The fourth proportional to 21,172.95, 31,765.77 and 6,382.35 is: 9,575.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.95 : 31,765.77 = 6,382.35 : x
  2. Step 2: Convert to fraction form
    21,172.95/31,765.77 = 6,382.35/x
  3. Step 3: Cross multiply
    21,172.95x = 31,765.77 × 6,382.35
  4. Step 4: Simplify right side
    21,172.95x = 202,740,262.16
  5. Step 5: Solve for x
    x = 202,740,262.16/21,172.95
  6. Step 6: Final answer
    x = 9,575.44

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1.5x scale

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.