Home / 30,573.45-42,190.56-17,145.54

Finding the Fourth Proportional to 30,573.45, 42,190.56 and 17,145.54

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Solution

The fourth proportional to 30,573.45, 42,190.56 and 17,145.54 is: 23,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,573.45 : 42,190.56 = 17,145.54 : x
  2. Step 2: Convert to fraction form
    30,573.45/42,190.56 = 17,145.54/x
  3. Step 3: Cross multiply
    30,573.45x = 42,190.56 × 17,145.54
  4. Step 4: Simplify right side
    30,573.45x = 723,379,934.10
  5. Step 5: Solve for x
    x = 723,379,934.10/30,573.45
  6. Step 6: Final answer
    x = 23,660.40

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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.