Home / 15,783.12-23,616.20-12,653.66

Finding the Fourth Proportional to 15,783.12, 23,616.20 and 12,653.66

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Solution

The fourth proportional to 15,783.12, 23,616.20 and 12,653.66 is: 18,933.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.12 : 23,616.20 = 12,653.66 : x
  2. Step 2: Convert to fraction form
    15,783.12/23,616.20 = 12,653.66/x
  3. Step 3: Cross multiply
    15,783.12x = 23,616.20 × 12,653.66
  4. Step 4: Simplify right side
    15,783.12x = 298,831,455.97
  5. Step 5: Solve for x
    x = 298,831,455.97/15,783.12
  6. Step 6: Final answer
    x = 18,933.61

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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.