Home / 21,559.20-32,338.80-9,895.20

Finding the Fourth Proportional to 21,559.20, 32,338.80 and 9,895.20

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Solution

The fourth proportional to 21,559.20, 32,338.80 and 9,895.20 is: 14,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.20 : 32,338.80 = 9,895.20 : x
  2. Step 2: Convert to fraction form
    21,559.20/32,338.80 = 9,895.20/x
  3. Step 3: Cross multiply
    21,559.20x = 32,338.80 × 9,895.20
  4. Step 4: Simplify right side
    21,559.20x = 319,998,893.76
  5. Step 5: Solve for x
    x = 319,998,893.76/21,559.20
  6. Step 6: Final answer
    x = 14,842.80

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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.