Home / 30,621.04-42,246.40-17,190.40

Finding the Fourth Proportional to 30,621.04, 42,246.40 and 17,190.40

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Solution

The fourth proportional to 30,621.04, 42,246.40 and 17,190.40 is: 23,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,621.04 : 42,246.40 = 17,190.40 : x
  2. Step 2: Convert to fraction form
    30,621.04/42,246.40 = 17,190.40/x
  3. Step 3: Cross multiply
    30,621.04x = 42,246.40 × 17,190.40
  4. Step 4: Simplify right side
    30,621.04x = 726,232,514.56
  5. Step 5: Solve for x
    x = 726,232,514.56/30,621.04
  6. Step 6: Final answer
    x = 23,716.78

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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.