Home / 30,318.88-45,418.80-17,131.04

Finding the Fourth Proportional to 30,318.88, 45,418.80 and 17,131.04

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Solution

The fourth proportional to 30,318.88, 45,418.80 and 17,131.04 is: 25,662.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,318.88 : 45,418.80 = 17,131.04 : x
  2. Step 2: Convert to fraction form
    30,318.88/45,418.80 = 17,131.04/x
  3. Step 3: Cross multiply
    30,318.88x = 45,418.80 × 17,131.04
  4. Step 4: Simplify right side
    30,318.88x = 778,071,279.55
  5. Step 5: Solve for x
    x = 778,071,279.55/30,318.88
  6. Step 6: Final answer
    x = 25,662.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.