Home / 21,269.62-29,288.01-20,022.76

Finding the Fourth Proportional to 21,269.62, 29,288.01 and 20,022.76

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Solution

The fourth proportional to 21,269.62, 29,288.01 and 20,022.76 is: 27,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.62 : 29,288.01 = 20,022.76 : x
  2. Step 2: Convert to fraction form
    21,269.62/29,288.01 = 20,022.76/x
  3. Step 3: Cross multiply
    21,269.62x = 29,288.01 × 20,022.76
  4. Step 4: Simplify right side
    21,269.62x = 586,426,795.11
  5. Step 5: Solve for x
    x = 586,426,795.11/21,269.62
  6. Step 6: Final answer
    x = 27,571.10

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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.