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Finding the Fourth Proportional to 21,655.88, 32,483.81 and 5,239.88

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Solution

The fourth proportional to 21,655.88, 32,483.81 and 5,239.88 is: 7,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,655.88 : 32,483.81 = 5,239.88 : x
  2. Step 2: Convert to fraction form
    21,655.88/32,483.81 = 5,239.88/x
  3. Step 3: Cross multiply
    21,655.88x = 32,483.81 × 5,239.88
  4. Step 4: Simplify right side
    21,655.88x = 170,211,117.02
  5. Step 5: Solve for x
    x = 170,211,117.02/21,655.88
  6. Step 6: Final answer
    x = 7,859.81

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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.