Home / 15,363.21-21,146.18-10,879.17

Finding the Fourth Proportional to 15,363.21, 21,146.18 and 10,879.17

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Solution

The fourth proportional to 15,363.21, 21,146.18 and 10,879.17 is: 14,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.21 : 21,146.18 = 10,879.17 : x
  2. Step 2: Convert to fraction form
    15,363.21/21,146.18 = 10,879.17/x
  3. Step 3: Cross multiply
    15,363.21x = 21,146.18 × 10,879.17
  4. Step 4: Simplify right side
    15,363.21x = 230,052,832.67
  5. Step 5: Solve for x
    x = 230,052,832.67/15,363.21
  6. Step 6: Final answer
    x = 14,974.27

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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.