Home / 21,071.10-31,608.27-6,278.88

Finding the Fourth Proportional to 21,071.10, 31,608.27 and 6,278.88

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Solution

The fourth proportional to 21,071.10, 31,608.27 and 6,278.88 is: 9,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.10 : 31,608.27 = 6,278.88 : x
  2. Step 2: Convert to fraction form
    21,071.10/31,608.27 = 6,278.88/x
  3. Step 3: Cross multiply
    21,071.10x = 31,608.27 × 6,278.88
  4. Step 4: Simplify right side
    21,071.10x = 198,464,534.34
  5. Step 5: Solve for x
    x = 198,464,534.34/21,071.10
  6. Step 6: Final answer
    x = 9,418.80

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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.