Home / 21,400.16-32,065.16-20,579.96

Finding the Fourth Proportional to 21,400.16, 32,065.16 and 20,579.96

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Solution

The fourth proportional to 21,400.16, 32,065.16 and 20,579.96 is: 30,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.16 : 32,065.16 = 20,579.96 : x
  2. Step 2: Convert to fraction form
    21,400.16/32,065.16 = 20,579.96/x
  3. Step 3: Cross multiply
    21,400.16x = 32,065.16 × 20,579.96
  4. Step 4: Simplify right side
    21,400.16x = 659,899,710.19
  5. Step 5: Solve for x
    x = 659,899,710.19/21,400.16
  6. Step 6: Final answer
    x = 30,836.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.