Home / 13,128.64-19,682.72-6,551.52

Finding the Fourth Proportional to 13,128.64, 19,682.72 and 6,551.52

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Solution

The fourth proportional to 13,128.64, 19,682.72 and 6,551.52 is: 9,822.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.64 : 19,682.72 = 6,551.52 : x
  2. Step 2: Convert to fraction form
    13,128.64/19,682.72 = 6,551.52/x
  3. Step 3: Cross multiply
    13,128.64x = 19,682.72 × 6,551.52
  4. Step 4: Simplify right side
    13,128.64x = 128,951,733.73
  5. Step 5: Solve for x
    x = 128,951,733.73/13,128.64
  6. Step 6: Final answer
    x = 9,822.17

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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.