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Finding the Fourth Proportional to 21,604.69, 32,407.04 and 5,188.69

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Solution

The fourth proportional to 21,604.69, 32,407.04 and 5,188.69 is: 7,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.69 : 32,407.04 = 5,188.69 : x
  2. Step 2: Convert to fraction form
    21,604.69/32,407.04 = 5,188.69/x
  3. Step 3: Cross multiply
    21,604.69x = 32,407.04 × 5,188.69
  4. Step 4: Simplify right side
    21,604.69x = 168,149,977.42
  5. Step 5: Solve for x
    x = 168,149,977.42/21,604.69
  6. Step 6: Final answer
    x = 7,783.03

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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.