Home / 21,518.70-32,265.63-8,355.69

Finding the Fourth Proportional to 21,518.70, 32,265.63 and 8,355.69

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Solution

The fourth proportional to 21,518.70, 32,265.63 and 8,355.69 is: 12,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.70 : 32,265.63 = 8,355.69 : x
  2. Step 2: Convert to fraction form
    21,518.70/32,265.63 = 8,355.69/x
  3. Step 3: Cross multiply
    21,518.70x = 32,265.63 × 8,355.69
  4. Step 4: Simplify right side
    21,518.70x = 269,601,601.93
  5. Step 5: Solve for x
    x = 269,601,601.93/21,518.70
  6. Step 6: Final answer
    x = 12,528.71

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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.