Home / 15,380.19-21,086.23-15,099.93

Finding the Fourth Proportional to 15,380.19, 21,086.23 and 15,099.93

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Solution

The fourth proportional to 15,380.19, 21,086.23 and 15,099.93 is: 20,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.19 : 21,086.23 = 15,099.93 : x
  2. Step 2: Convert to fraction form
    15,380.19/21,086.23 = 15,099.93/x
  3. Step 3: Cross multiply
    15,380.19x = 21,086.23 × 15,099.93
  4. Step 4: Simplify right side
    15,380.19x = 318,400,596.96
  5. Step 5: Solve for x
    x = 318,400,596.96/15,380.19
  6. Step 6: Final answer
    x = 20,701.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.