Home / 15,405.85-23,109.45-8,005.69

Finding the Fourth Proportional to 15,405.85, 23,109.45 and 8,005.69

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Solution

The fourth proportional to 15,405.85, 23,109.45 and 8,005.69 is: 12,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.85 : 23,109.45 = 8,005.69 : x
  2. Step 2: Convert to fraction form
    15,405.85/23,109.45 = 8,005.69/x
  3. Step 3: Cross multiply
    15,405.85x = 23,109.45 × 8,005.69
  4. Step 4: Simplify right side
    15,405.85x = 185,007,092.77
  5. Step 5: Solve for x
    x = 185,007,092.77/15,405.85
  6. Step 6: Final answer
    x = 12,008.89

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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.