Home / 21,277.20-31,915.80-16,371.60

Finding the Fourth Proportional to 21,277.20, 31,915.80 and 16,371.60

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Solution

The fourth proportional to 21,277.20, 31,915.80 and 16,371.60 is: 24,557.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.20 : 31,915.80 = 16,371.60 : x
  2. Step 2: Convert to fraction form
    21,277.20/31,915.80 = 16,371.60/x
  3. Step 3: Cross multiply
    21,277.20x = 31,915.80 × 16,371.60
  4. Step 4: Simplify right side
    21,277.20x = 522,512,711.28
  5. Step 5: Solve for x
    x = 522,512,711.28/21,277.20
  6. Step 6: Final answer
    x = 24,557.40

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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.