Home / 28,256.91-42,385.38-20,514.93

Finding the Fourth Proportional to 28,256.91, 42,385.38 and 20,514.93

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Solution

The fourth proportional to 28,256.91, 42,385.38 and 20,514.93 is: 30,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.91 : 42,385.38 = 20,514.93 : x
  2. Step 2: Convert to fraction form
    28,256.91/42,385.38 = 20,514.93/x
  3. Step 3: Cross multiply
    28,256.91x = 42,385.38 × 20,514.93
  4. Step 4: Simplify right side
    28,256.91x = 869,533,103.72
  5. Step 5: Solve for x
    x = 869,533,103.72/28,256.91
  6. Step 6: Final answer
    x = 30,772.41

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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.