Home / 15,840.24-21,860.64-8,766.96

Finding the Fourth Proportional to 15,840.24, 21,860.64 and 8,766.96

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Solution

The fourth proportional to 15,840.24, 21,860.64 and 8,766.96 is: 12,099.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.24 : 21,860.64 = 8,766.96 : x
  2. Step 2: Convert to fraction form
    15,840.24/21,860.64 = 8,766.96/x
  3. Step 3: Cross multiply
    15,840.24x = 21,860.64 × 8,766.96
  4. Step 4: Simplify right side
    15,840.24x = 191,651,356.45
  5. Step 5: Solve for x
    x = 191,651,356.45/15,840.24
  6. Step 6: Final answer
    x = 12,099.02

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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.