Home / 21,550.08-29,739.78-12,119.16

Finding the Fourth Proportional to 21,550.08, 29,739.78 and 12,119.16

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Solution

The fourth proportional to 21,550.08, 29,739.78 and 12,119.16 is: 16,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.08 : 29,739.78 = 12,119.16 : x
  2. Step 2: Convert to fraction form
    21,550.08/29,739.78 = 12,119.16/x
  3. Step 3: Cross multiply
    21,550.08x = 29,739.78 × 12,119.16
  4. Step 4: Simplify right side
    21,550.08x = 360,421,152.18
  5. Step 5: Solve for x
    x = 360,421,152.18/21,550.08
  6. Step 6: Final answer
    x = 16,724.82

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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.