Home / 21,539.67-32,286.38-10,421.85

Finding the Fourth Proportional to 21,539.67, 32,286.38 and 10,421.85

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Solution

The fourth proportional to 21,539.67, 32,286.38 and 10,421.85 is: 15,621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.67 : 32,286.38 = 10,421.85 : x
  2. Step 2: Convert to fraction form
    21,539.67/32,286.38 = 10,421.85/x
  3. Step 3: Cross multiply
    21,539.67x = 32,286.38 × 10,421.85
  4. Step 4: Simplify right side
    21,539.67x = 336,483,935.56
  5. Step 5: Solve for x
    x = 336,483,935.56/21,539.67
  6. Step 6: Final answer
    x = 15,621.59

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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.