Home / 14,120.25-19,484.30-8,454.21

Finding the Fourth Proportional to 14,120.25, 19,484.30 and 8,454.21

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Solution

The fourth proportional to 14,120.25, 19,484.30 and 8,454.21 is: 11,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.25 : 19,484.30 = 8,454.21 : x
  2. Step 2: Convert to fraction form
    14,120.25/19,484.30 = 8,454.21/x
  3. Step 3: Cross multiply
    14,120.25x = 19,484.30 × 8,454.21
  4. Step 4: Simplify right side
    14,120.25x = 164,724,363.90
  5. Step 5: Solve for x
    x = 164,724,363.90/14,120.25
  6. Step 6: Final answer
    x = 11,665.82

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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.