Home / 15,840.37-21,859.09-8,766.64

Finding the Fourth Proportional to 15,840.37, 21,859.09 and 8,766.64

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Solution

The fourth proportional to 15,840.37, 21,859.09 and 8,766.64 is: 12,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.37 : 21,859.09 = 8,766.64 : x
  2. Step 2: Convert to fraction form
    15,840.37/21,859.09 = 8,766.64/x
  3. Step 3: Cross multiply
    15,840.37x = 21,859.09 × 8,766.64
  4. Step 4: Simplify right side
    15,840.37x = 191,630,772.76
  5. Step 5: Solve for x
    x = 191,630,772.76/15,840.37
  6. Step 6: Final answer
    x = 12,097.62

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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.