Home / 21,274.32-29,357.46-11,843.40

Finding the Fourth Proportional to 21,274.32, 29,357.46 and 11,843.40

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Solution

The fourth proportional to 21,274.32, 29,357.46 and 11,843.40 is: 16,343.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.32 : 29,357.46 = 11,843.40 : x
  2. Step 2: Convert to fraction form
    21,274.32/29,357.46 = 11,843.40/x
  3. Step 3: Cross multiply
    21,274.32x = 29,357.46 × 11,843.40
  4. Step 4: Simplify right side
    21,274.32x = 347,692,141.76
  5. Step 5: Solve for x
    x = 347,692,141.76/21,274.32
  6. Step 6: Final answer
    x = 16,343.28

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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.