Home / 18,501.31-25,523.16-12,126.21

Finding the Fourth Proportional to 18,501.31, 25,523.16 and 12,126.21

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Solution

The fourth proportional to 18,501.31, 25,523.16 and 12,126.21 is: 16,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,501.31 : 25,523.16 = 12,126.21 : x
  2. Step 2: Convert to fraction form
    18,501.31/25,523.16 = 12,126.21/x
  3. Step 3: Cross multiply
    18,501.31x = 25,523.16 × 12,126.21
  4. Step 4: Simplify right side
    18,501.31x = 309,499,198.02
  5. Step 5: Solve for x
    x = 309,499,198.02/18,501.31
  6. Step 6: Final answer
    x = 16,728.50

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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.