Home / 21,515.20-32,272.80-15,683.20

Finding the Fourth Proportional to 21,515.20, 32,272.80 and 15,683.20

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Solution

The fourth proportional to 21,515.20, 32,272.80 and 15,683.20 is: 23,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.20 : 32,272.80 = 15,683.20 : x
  2. Step 2: Convert to fraction form
    21,515.20/32,272.80 = 15,683.20/x
  3. Step 3: Cross multiply
    21,515.20x = 32,272.80 × 15,683.20
  4. Step 4: Simplify right side
    21,515.20x = 506,140,776.96
  5. Step 5: Solve for x
    x = 506,140,776.96/21,515.20
  6. Step 6: Final answer
    x = 23,524.80

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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.