Home / 12,754.17-19,128.21-5,358.77

Finding the Fourth Proportional to 12,754.17, 19,128.21 and 5,358.77

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Solution

The fourth proportional to 12,754.17, 19,128.21 and 5,358.77 is: 8,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,754.17 : 19,128.21 = 5,358.77 : x
  2. Step 2: Convert to fraction form
    12,754.17/19,128.21 = 5,358.77/x
  3. Step 3: Cross multiply
    12,754.17x = 19,128.21 × 5,358.77
  4. Step 4: Simplify right side
    12,754.17x = 102,503,677.90
  5. Step 5: Solve for x
    x = 102,503,677.90/12,754.17
  6. Step 6: Final answer
    x = 8,036.88

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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.