Home / 15,861.32-21,879.84-10,108.04

Finding the Fourth Proportional to 15,861.32, 21,879.84 and 10,108.04

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Solution

The fourth proportional to 15,861.32, 21,879.84 and 10,108.04 is: 13,943.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.32 : 21,879.84 = 10,108.04 : x
  2. Step 2: Convert to fraction form
    15,861.32/21,879.84 = 10,108.04/x
  3. Step 3: Cross multiply
    15,861.32x = 21,879.84 × 10,108.04
  4. Step 4: Simplify right side
    15,861.32x = 221,162,297.91
  5. Step 5: Solve for x
    x = 221,162,297.91/15,861.32
  6. Step 6: Final answer
    x = 13,943.50

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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.