Home / 21,431.70-32,147.55-15,526.80

Finding the Fourth Proportional to 21,431.70, 32,147.55 and 15,526.80

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Solution

The fourth proportional to 21,431.70, 32,147.55 and 15,526.80 is: 23,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.70 : 32,147.55 = 15,526.80 : x
  2. Step 2: Convert to fraction form
    21,431.70/32,147.55 = 15,526.80/x
  3. Step 3: Cross multiply
    21,431.70x = 32,147.55 × 15,526.80
  4. Step 4: Simplify right side
    21,431.70x = 499,148,579.34
  5. Step 5: Solve for x
    x = 499,148,579.34/21,431.70
  6. Step 6: Final answer
    x = 23,290.20

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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.