Home / 21,924.90-32,822.55-20,643.30

Finding the Fourth Proportional to 21,924.90, 32,822.55 and 20,643.30

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Solution

The fourth proportional to 21,924.90, 32,822.55 and 20,643.30 is: 30,903.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.90 : 32,822.55 = 20,643.30 : x
  2. Step 2: Convert to fraction form
    21,924.90/32,822.55 = 20,643.30/x
  3. Step 3: Cross multiply
    21,924.90x = 32,822.55 × 20,643.30
  4. Step 4: Simplify right side
    21,924.90x = 677,565,746.42
  5. Step 5: Solve for x
    x = 677,565,746.42/21,924.90
  6. Step 6: Final answer
    x = 30,903.94

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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.