Home / 21,915.36-32,888.88-8,771.52

Finding the Fourth Proportional to 21,915.36, 32,888.88 and 8,771.52

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Solution

The fourth proportional to 21,915.36, 32,888.88 and 8,771.52 is: 13,163.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.36 : 32,888.88 = 8,771.52 : x
  2. Step 2: Convert to fraction form
    21,915.36/32,888.88 = 8,771.52/x
  3. Step 3: Cross multiply
    21,915.36x = 32,888.88 × 8,771.52
  4. Step 4: Simplify right side
    21,915.36x = 288,485,468.70
  5. Step 5: Solve for x
    x = 288,485,468.70/21,915.36
  6. Step 6: Final answer
    x = 13,163.62

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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.