Home / 15,817.86-21,829.95-8,745.66

Finding the Fourth Proportional to 15,817.86, 21,829.95 and 8,745.66

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Solution

The fourth proportional to 15,817.86, 21,829.95 and 8,745.66 is: 12,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,817.86 : 21,829.95 = 8,745.66 : x
  2. Step 2: Convert to fraction form
    15,817.86/21,829.95 = 8,745.66/x
  3. Step 3: Cross multiply
    15,817.86x = 21,829.95 × 8,745.66
  4. Step 4: Simplify right side
    15,817.86x = 190,917,320.52
  5. Step 5: Solve for x
    x = 190,917,320.52/15,817.86
  6. Step 6: Final answer
    x = 12,069.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.