Home / 34,310.28-51,465.42-18,719.40

Finding the Fourth Proportional to 34,310.28, 51,465.42 and 18,719.40

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Solution

The fourth proportional to 34,310.28, 51,465.42 and 18,719.40 is: 28,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,310.28 : 51,465.42 = 18,719.40 : x
  2. Step 2: Convert to fraction form
    34,310.28/51,465.42 = 18,719.40/x
  3. Step 3: Cross multiply
    34,310.28x = 51,465.42 × 18,719.40
  4. Step 4: Simplify right side
    34,310.28x = 963,401,783.15
  5. Step 5: Solve for x
    x = 963,401,783.15/34,310.28
  6. Step 6: Final answer
    x = 28,079.10

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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.