Home / 30,900.24-42,640.62-17,470.64

Finding the Fourth Proportional to 30,900.24, 42,640.62 and 17,470.64

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Solution

The fourth proportional to 30,900.24, 42,640.62 and 17,470.64 is: 24,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,900.24 : 42,640.62 = 17,470.64 : x
  2. Step 2: Convert to fraction form
    30,900.24/42,640.62 = 17,470.64/x
  3. Step 3: Cross multiply
    30,900.24x = 42,640.62 × 17,470.64
  4. Step 4: Simplify right side
    30,900.24x = 744,958,921.40
  5. Step 5: Solve for x
    x = 744,958,921.40/30,900.24
  6. Step 6: Final answer
    x = 24,108.52

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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.