Home / 21,398,936.64-29,530,529.28-12,231,776.16

Finding the Fourth Proportional to 21,398,936.64, 29,530,529.28 and 12,231,776.16

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Solution

The fourth proportional to 21,398,936.64, 29,530,529.28 and 12,231,776.16 is: 16,879,849.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398,936.64 : 29,530,529.28 = 12,231,776.16 : x
  2. Step 2: Convert to fraction form
    21,398,936.64/29,530,529.28 = 12,231,776.16/x
  3. Step 3: Cross multiply
    21,398,936.64x = 29,530,529.28 × 12,231,776.16
  4. Step 4: Simplify right side
    21,398,936.64x = 361,210,824,039,286
  5. Step 5: Solve for x
    x = 361,210,824,039,286/21,398,936.64
  6. Step 6: Final answer
    x = 16,879,849.22

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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.