Home / 21,375.32-29,511.78-19,133.24

Finding the Fourth Proportional to 21,375.32, 29,511.78 and 19,133.24

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Solution

The fourth proportional to 21,375.32, 29,511.78 and 19,133.24 is: 26,416.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.32 : 29,511.78 = 19,133.24 : x
  2. Step 2: Convert to fraction form
    21,375.32/29,511.78 = 19,133.24/x
  3. Step 3: Cross multiply
    21,375.32x = 29,511.78 × 19,133.24
  4. Step 4: Simplify right side
    21,375.32x = 564,655,969.57
  5. Step 5: Solve for x
    x = 564,655,969.57/21,375.32
  6. Step 6: Final answer
    x = 26,416.26

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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.