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Finding the Fourth Proportional to 14,053.17, 19,391.03 and 8,390.21

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Solution

The fourth proportional to 14,053.17, 19,391.03 and 8,390.21 is: 11,577.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,053.17 : 19,391.03 = 8,390.21 : x
  2. Step 2: Convert to fraction form
    14,053.17/19,391.03 = 8,390.21/x
  3. Step 3: Cross multiply
    14,053.17x = 19,391.03 × 8,390.21
  4. Step 4: Simplify right side
    14,053.17x = 162,694,813.82
  5. Step 5: Solve for x
    x = 162,694,813.82/14,053.17
  6. Step 6: Final answer
    x = 11,577.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.