Home / 15,278.27-21,083.83-8,563.88

Finding the Fourth Proportional to 15,278.27, 21,083.83 and 8,563.88

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Solution

The fourth proportional to 15,278.27, 21,083.83 and 8,563.88 is: 11,818.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.27 : 21,083.83 = 8,563.88 : x
  2. Step 2: Convert to fraction form
    15,278.27/21,083.83 = 8,563.88/x
  3. Step 3: Cross multiply
    15,278.27x = 21,083.83 × 8,563.88
  4. Step 4: Simplify right side
    15,278.27x = 180,559,421.36
  5. Step 5: Solve for x
    x = 180,559,421.36/15,278.27
  6. Step 6: Final answer
    x = 11,818.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.