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Finding the Fourth Proportional to 14,355.92, 21,543.81 and 5,590.88

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Solution

The fourth proportional to 14,355.92, 21,543.81 and 5,590.88 is: 8,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.92 : 21,543.81 = 5,590.88 : x
  2. Step 2: Convert to fraction form
    14,355.92/21,543.81 = 5,590.88/x
  3. Step 3: Cross multiply
    14,355.92x = 21,543.81 × 5,590.88
  4. Step 4: Simplify right side
    14,355.92x = 120,448,856.45
  5. Step 5: Solve for x
    x = 120,448,856.45/14,355.92
  6. Step 6: Final answer
    x = 8,390.19

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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.