Home / 30,021.09-45,033.89-8,959.47

Finding the Fourth Proportional to 30,021.09, 45,033.89 and 8,959.47

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Solution

The fourth proportional to 30,021.09, 45,033.89 and 8,959.47 is: 13,439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,021.09 : 45,033.89 = 8,959.47 : x
  2. Step 2: Convert to fraction form
    30,021.09/45,033.89 = 8,959.47/x
  3. Step 3: Cross multiply
    30,021.09x = 45,033.89 × 8,959.47
  4. Step 4: Simplify right side
    30,021.09x = 403,479,741.64
  5. Step 5: Solve for x
    x = 403,479,741.64/30,021.09
  6. Step 6: Final answer
    x = 13,439.88

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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.