Home / 30,081.44-45,148.08-20,853.92

Finding the Fourth Proportional to 30,081.44, 45,148.08 and 20,853.92

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Solution

The fourth proportional to 30,081.44, 45,148.08 and 20,853.92 is: 31,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.44 : 45,148.08 = 20,853.92 : x
  2. Step 2: Convert to fraction form
    30,081.44/45,148.08 = 20,853.92/x
  3. Step 3: Cross multiply
    30,081.44x = 45,148.08 × 20,853.92
  4. Step 4: Simplify right side
    30,081.44x = 941,514,448.47
  5. Step 5: Solve for x
    x = 941,514,448.47/30,081.44
  6. Step 6: Final answer
    x = 31,298.85

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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.