Home / 34,311.05-47,335.15-20,880.10

Finding the Fourth Proportional to 34,311.05, 47,335.15 and 20,880.10

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Solution

The fourth proportional to 34,311.05, 47,335.15 and 20,880.10 is: 28,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,311.05 : 47,335.15 = 20,880.10 : x
  2. Step 2: Convert to fraction form
    34,311.05/47,335.15 = 20,880.10/x
  3. Step 3: Cross multiply
    34,311.05x = 47,335.15 × 20,880.10
  4. Step 4: Simplify right side
    34,311.05x = 988,362,665.52
  5. Step 5: Solve for x
    x = 988,362,665.52/34,311.05
  6. Step 6: Final answer
    x = 28,805.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.