Home / 30,128.28-45,192.02-9,351.78

Finding the Fourth Proportional to 30,128.28, 45,192.02 and 9,351.78

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Solution

The fourth proportional to 30,128.28, 45,192.02 and 9,351.78 is: 14,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.28 : 45,192.02 = 9,351.78 : x
  2. Step 2: Convert to fraction form
    30,128.28/45,192.02 = 9,351.78/x
  3. Step 3: Cross multiply
    30,128.28x = 45,192.02 × 9,351.78
  4. Step 4: Simplify right side
    30,128.28x = 422,625,782.04
  5. Step 5: Solve for x
    x = 422,625,782.04/30,128.28
  6. Step 6: Final answer
    x = 14,027.54

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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.