Home / 18,605.66-25,682.56-12,320.06

Finding the Fourth Proportional to 18,605.66, 25,682.56 and 12,320.06

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Solution

The fourth proportional to 18,605.66, 25,682.56 and 12,320.06 is: 17,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.66 : 25,682.56 = 12,320.06 : x
  2. Step 2: Convert to fraction form
    18,605.66/25,682.56 = 12,320.06/x
  3. Step 3: Cross multiply
    18,605.66x = 25,682.56 × 12,320.06
  4. Step 4: Simplify right side
    18,605.66x = 316,410,680.15
  5. Step 5: Solve for x
    x = 316,410,680.15/18,605.66
  6. Step 6: Final answer
    x = 17,006.15

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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.