Home / 30,433.73-42,003.36-18,500.81

Finding the Fourth Proportional to 30,433.73, 42,003.36 and 18,500.81

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Solution

The fourth proportional to 30,433.73, 42,003.36 and 18,500.81 is: 25,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,433.73 : 42,003.36 = 18,500.81 : x
  2. Step 2: Convert to fraction form
    30,433.73/42,003.36 = 18,500.81/x
  3. Step 3: Cross multiply
    30,433.73x = 42,003.36 × 18,500.81
  4. Step 4: Simplify right side
    30,433.73x = 777,095,972.70
  5. Step 5: Solve for x
    x = 777,095,972.70/30,433.73
  6. Step 6: Final answer
    x = 25,534.04

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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.