Home / 18,390.48-27,590.04-8,005.20

Finding the Fourth Proportional to 18,390.48, 27,590.04 and 8,005.20

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Solution

The fourth proportional to 18,390.48, 27,590.04 and 8,005.20 is: 12,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.48 : 27,590.04 = 8,005.20 : x
  2. Step 2: Convert to fraction form
    18,390.48/27,590.04 = 8,005.20/x
  3. Step 3: Cross multiply
    18,390.48x = 27,590.04 × 8,005.20
  4. Step 4: Simplify right side
    18,390.48x = 220,863,788.21
  5. Step 5: Solve for x
    x = 220,863,788.21/18,390.48
  6. Step 6: Final answer
    x = 12,009.68

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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.