Home / 13,712.64-20,574.72-8,784.96

Finding the Fourth Proportional to 13,712.64, 20,574.72 and 8,784.96

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Solution

The fourth proportional to 13,712.64, 20,574.72 and 8,784.96 is: 13,181.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.64 : 20,574.72 = 8,784.96 : x
  2. Step 2: Convert to fraction form
    13,712.64/20,574.72 = 8,784.96/x
  3. Step 3: Cross multiply
    13,712.64x = 20,574.72 × 8,784.96
  4. Step 4: Simplify right side
    13,712.64x = 180,748,092.21
  5. Step 5: Solve for x
    x = 180,748,092.21/13,712.64
  6. Step 6: Final answer
    x = 13,181.13

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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.