Home / 18,415.30-27,626.55-7,320.10

Finding the Fourth Proportional to 18,415.30, 27,626.55 and 7,320.10

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Solution

The fourth proportional to 18,415.30, 27,626.55 and 7,320.10 is: 10,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.30 : 27,626.55 = 7,320.10 : x
  2. Step 2: Convert to fraction form
    18,415.30/27,626.55 = 7,320.10/x
  3. Step 3: Cross multiply
    18,415.30x = 27,626.55 × 7,320.10
  4. Step 4: Simplify right side
    18,415.30x = 202,229,108.66
  5. Step 5: Solve for x
    x = 202,229,108.66/18,415.30
  6. Step 6: Final answer
    x = 10,981.58

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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.