Home / 30,825.60-42,534.48-18,077.76

Finding the Fourth Proportional to 30,825.60, 42,534.48 and 18,077.76

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Solution

The fourth proportional to 30,825.60, 42,534.48 and 18,077.76 is: 24,944.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.60 : 42,534.48 = 18,077.76 : x
  2. Step 2: Convert to fraction form
    30,825.60/42,534.48 = 18,077.76/x
  3. Step 3: Cross multiply
    30,825.60x = 42,534.48 × 18,077.76
  4. Step 4: Simplify right side
    30,825.60x = 768,928,121.16
  5. Step 5: Solve for x
    x = 768,928,121.16/30,825.60
  6. Step 6: Final answer
    x = 24,944.47

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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.