Home / 30,560.05-42,172.81-17,131.30

Finding the Fourth Proportional to 30,560.05, 42,172.81 and 17,131.30

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Solution

The fourth proportional to 30,560.05, 42,172.81 and 17,131.30 is: 23,641.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,560.05 : 42,172.81 = 17,131.30 : x
  2. Step 2: Convert to fraction form
    30,560.05/42,172.81 = 17,131.30/x
  3. Step 3: Cross multiply
    30,560.05x = 42,172.81 × 17,131.30
  4. Step 4: Simplify right side
    30,560.05x = 722,474,763.43
  5. Step 5: Solve for x
    x = 722,474,763.43/30,560.05
  6. Step 6: Final answer
    x = 23,641.16

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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.