Home / 30,514.78-45,543.38-28,521.87

Finding the Fourth Proportional to 30,514.78, 45,543.38 and 28,521.87

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Solution

The fourth proportional to 30,514.78, 45,543.38 and 28,521.87 is: 42,568.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,514.78 : 45,543.38 = 28,521.87 : x
  2. Step 2: Convert to fraction form
    30,514.78/45,543.38 = 28,521.87/x
  3. Step 3: Cross multiply
    30,514.78x = 45,543.38 × 28,521.87
  4. Step 4: Simplify right side
    30,514.78x = 1,298,982,466.94
  5. Step 5: Solve for x
    x = 1,298,982,466.94/30,514.78
  6. Step 6: Final answer
    x = 42,568.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.