Home / 20,587.86-30,898.19-8,111.03

Finding the Fourth Proportional to 20,587.86, 30,898.19 and 8,111.03

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Solution

The fourth proportional to 20,587.86, 30,898.19 and 8,111.03 is: 12,173.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.86 : 30,898.19 = 8,111.03 : x
  2. Step 2: Convert to fraction form
    20,587.86/30,898.19 = 8,111.03/x
  3. Step 3: Cross multiply
    20,587.86x = 30,898.19 × 8,111.03
  4. Step 4: Simplify right side
    20,587.86x = 250,616,011.82
  5. Step 5: Solve for x
    x = 250,616,011.82/20,587.86
  6. Step 6: Final answer
    x = 12,173.00

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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.