Home / 30,126.28-45,133.99-18,879.53

Finding the Fourth Proportional to 30,126.28, 45,133.99 and 18,879.53

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Solution

The fourth proportional to 30,126.28, 45,133.99 and 18,879.53 is: 28,284.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,126.28 : 45,133.99 = 18,879.53 : x
  2. Step 2: Convert to fraction form
    30,126.28/45,133.99 = 18,879.53/x
  3. Step 3: Cross multiply
    30,126.28x = 45,133.99 × 18,879.53
  4. Step 4: Simplify right side
    30,126.28x = 852,108,518.22
  5. Step 5: Solve for x
    x = 852,108,518.22/30,126.28
  6. Step 6: Final answer
    x = 28,284.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.