Home / 12,720.17-19,091.24-8,827.31

Finding the Fourth Proportional to 12,720.17, 19,091.24 and 8,827.31

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Solution

The fourth proportional to 12,720.17, 19,091.24 and 8,827.31 is: 13,248.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.17 : 19,091.24 = 8,827.31 : x
  2. Step 2: Convert to fraction form
    12,720.17/19,091.24 = 8,827.31/x
  3. Step 3: Cross multiply
    12,720.17x = 19,091.24 × 8,827.31
  4. Step 4: Simplify right side
    12,720.17x = 168,524,249.63
  5. Step 5: Solve for x
    x = 168,524,249.63/12,720.17
  6. Step 6: Final answer
    x = 13,248.58

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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.