Home / 15,840.45-21,859.77-8,766.87

Finding the Fourth Proportional to 15,840.45, 21,859.77 and 8,766.87

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Solution

The fourth proportional to 15,840.45, 21,859.77 and 8,766.87 is: 12,098.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.45 : 21,859.77 = 8,766.87 : x
  2. Step 2: Convert to fraction form
    15,840.45/21,859.77 = 8,766.87/x
  3. Step 3: Cross multiply
    15,840.45x = 21,859.77 × 8,766.87
  4. Step 4: Simplify right side
    15,840.45x = 191,641,761.82
  5. Step 5: Solve for x
    x = 191,641,761.82/15,840.45
  6. Step 6: Final answer
    x = 12,098.25

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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.