Home / 19,742.63-29,622.15-8,643.61

Finding the Fourth Proportional to 19,742.63, 29,622.15 and 8,643.61

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Solution

The fourth proportional to 19,742.63, 29,622.15 and 8,643.61 is: 12,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.63 : 29,622.15 = 8,643.61 : x
  2. Step 2: Convert to fraction form
    19,742.63/29,622.15 = 8,643.61/x
  3. Step 3: Cross multiply
    19,742.63x = 29,622.15 × 8,643.61
  4. Step 4: Simplify right side
    19,742.63x = 256,042,311.96
  5. Step 5: Solve for x
    x = 256,042,311.96/19,742.63
  6. Step 6: Final answer
    x = 12,969.01

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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.