Home / 30,627.28-42,270.27-18,697.56

Finding the Fourth Proportional to 30,627.28, 42,270.27 and 18,697.56

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Solution

The fourth proportional to 30,627.28, 42,270.27 and 18,697.56 is: 25,805.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,627.28 : 42,270.27 = 18,697.56 : x
  2. Step 2: Convert to fraction form
    30,627.28/42,270.27 = 18,697.56/x
  3. Step 3: Cross multiply
    30,627.28x = 42,270.27 × 18,697.56
  4. Step 4: Simplify right side
    30,627.28x = 790,350,909.54
  5. Step 5: Solve for x
    x = 790,350,909.54/30,627.28
  6. Step 6: Final answer
    x = 25,805.46

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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.