Home / 30,560.32-42,173.10-17,131.56

Finding the Fourth Proportional to 30,560.32, 42,173.10 and 17,131.56

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Solution

The fourth proportional to 30,560.32, 42,173.10 and 17,131.56 is: 23,641.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,560.32 : 42,173.10 = 17,131.56 : x
  2. Step 2: Convert to fraction form
    30,560.32/42,173.10 = 17,131.56/x
  3. Step 3: Cross multiply
    30,560.32x = 42,173.10 × 17,131.56
  4. Step 4: Simplify right side
    30,560.32x = 722,490,993.04
  5. Step 5: Solve for x
    x = 722,490,993.04/30,560.32
  6. Step 6: Final answer
    x = 23,641.47

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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.