Home / 15,776.25-21,757.50-13,651.10

Finding the Fourth Proportional to 15,776.25, 21,757.50 and 13,651.10

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Solution

The fourth proportional to 15,776.25, 21,757.50 and 13,651.10 is: 18,826.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.25 : 21,757.50 = 13,651.10 : x
  2. Step 2: Convert to fraction form
    15,776.25/21,757.50 = 13,651.10/x
  3. Step 3: Cross multiply
    15,776.25x = 21,757.50 × 13,651.10
  4. Step 4: Simplify right side
    15,776.25x = 297,013,699.46
  5. Step 5: Solve for x
    x = 297,013,699.46/15,776.25
  6. Step 6: Final answer
    x = 18,826.63

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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.