Home / 34,298.10-47,321.73-20,145.78

Finding the Fourth Proportional to 34,298.10, 47,321.73 and 20,145.78

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Solution

The fourth proportional to 34,298.10, 47,321.73 and 20,145.78 is: 27,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,298.10 : 47,321.73 = 20,145.78 : x
  2. Step 2: Convert to fraction form
    34,298.10/47,321.73 = 20,145.78/x
  3. Step 3: Cross multiply
    34,298.10x = 47,321.73 × 20,145.78
  4. Step 4: Simplify right side
    34,298.10x = 953,333,161.80
  5. Step 5: Solve for x
    x = 953,333,161.80/34,298.10
  6. Step 6: Final answer
    x = 27,795.51

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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.