Home / 15,615.86-23,423.79-3,929.07

Finding the Fourth Proportional to 15,615.86, 23,423.79 and 3,929.07

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Solution

The fourth proportional to 15,615.86, 23,423.79 and 3,929.07 is: 5,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.86 : 23,423.79 = 3,929.07 : x
  2. Step 2: Convert to fraction form
    15,615.86/23,423.79 = 3,929.07/x
  3. Step 3: Cross multiply
    15,615.86x = 23,423.79 × 3,929.07
  4. Step 4: Simplify right side
    15,615.86x = 92,033,710.58
  5. Step 5: Solve for x
    x = 92,033,710.58/15,615.86
  6. Step 6: Final answer
    x = 5,893.61

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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.