Home / 30,825.12-42,541.56-18,251.76

Finding the Fourth Proportional to 30,825.12, 42,541.56 and 18,251.76

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Solution

The fourth proportional to 30,825.12, 42,541.56 and 18,251.76 is: 25,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.12 : 42,541.56 = 18,251.76 : x
  2. Step 2: Convert to fraction form
    30,825.12/42,541.56 = 18,251.76/x
  3. Step 3: Cross multiply
    30,825.12x = 42,541.56 × 18,251.76
  4. Step 4: Simplify right side
    30,825.12x = 776,458,343.15
  5. Step 5: Solve for x
    x = 776,458,343.15/30,825.12
  6. Step 6: Final answer
    x = 25,189.14

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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.