Home / 21,304.47-29,400.31-11,873.64

Finding the Fourth Proportional to 21,304.47, 29,400.31 and 11,873.64

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Solution

The fourth proportional to 21,304.47, 29,400.31 and 11,873.64 is: 16,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.47 : 29,400.31 = 11,873.64 : x
  2. Step 2: Convert to fraction form
    21,304.47/29,400.31 = 11,873.64/x
  3. Step 3: Cross multiply
    21,304.47x = 29,400.31 × 11,873.64
  4. Step 4: Simplify right side
    21,304.47x = 349,088,520.14
  5. Step 5: Solve for x
    x = 349,088,520.14/21,304.47
  6. Step 6: Final answer
    x = 16,385.70

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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.