Home / 21,375.76-29,498.46-11,816.32

Finding the Fourth Proportional to 21,375.76, 29,498.46 and 11,816.32

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Solution

The fourth proportional to 21,375.76, 29,498.46 and 11,816.32 is: 16,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.76 : 29,498.46 = 11,816.32 : x
  2. Step 2: Convert to fraction form
    21,375.76/29,498.46 = 11,816.32/x
  3. Step 3: Cross multiply
    21,375.76x = 29,498.46 × 11,816.32
  4. Step 4: Simplify right side
    21,375.76x = 348,563,242.87
  5. Step 5: Solve for x
    x = 348,563,242.87/21,375.76
  6. Step 6: Final answer
    x = 16,306.47

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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.