Home / 21,965.80-32,919.90-8,807.40

Finding the Fourth Proportional to 21,965.80, 32,919.90 and 8,807.40

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Solution

The fourth proportional to 21,965.80, 32,919.90 and 8,807.40 is: 13,199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.80 : 32,919.90 = 8,807.40 : x
  2. Step 2: Convert to fraction form
    21,965.80/32,919.90 = 8,807.40/x
  3. Step 3: Cross multiply
    21,965.80x = 32,919.90 × 8,807.40
  4. Step 4: Simplify right side
    21,965.80x = 289,938,727.26
  5. Step 5: Solve for x
    x = 289,938,727.26/21,965.80
  6. Step 6: Final answer
    x = 13,199.55

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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.