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Finding the Fourth Proportional to 21,885.69, 32,844.90 and 15,559.80

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Solution

The fourth proportional to 21,885.69, 32,844.90 and 15,559.80 is: 23,351.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.69 : 32,844.90 = 15,559.80 : x
  2. Step 2: Convert to fraction form
    21,885.69/32,844.90 = 15,559.80/x
  3. Step 3: Cross multiply
    21,885.69x = 32,844.90 × 15,559.80
  4. Step 4: Simplify right side
    21,885.69x = 511,060,075.02
  5. Step 5: Solve for x
    x = 511,060,075.02/21,885.69
  6. Step 6: Final answer
    x = 23,351.33

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1.5x scale

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.