Home / 21,551.92-29,756.28-15,887.32

Finding the Fourth Proportional to 21,551.92, 29,756.28 and 15,887.32

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Solution

The fourth proportional to 21,551.92, 29,756.28 and 15,887.32 is: 21,935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.92 : 29,756.28 = 15,887.32 : x
  2. Step 2: Convert to fraction form
    21,551.92/29,756.28 = 15,887.32/x
  3. Step 3: Cross multiply
    21,551.92x = 29,756.28 × 15,887.32
  4. Step 4: Simplify right side
    21,551.92x = 472,747,542.37
  5. Step 5: Solve for x
    x = 472,747,542.37/21,551.92
  6. Step 6: Final answer
    x = 21,935.29

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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.