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Finding the Fourth Proportional to 21,418.93, 32,142.93 and 7,567.93

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Solution

The fourth proportional to 21,418.93, 32,142.93 and 7,567.93 is: 11,357.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.93 : 32,142.93 = 7,567.93 : x
  2. Step 2: Convert to fraction form
    21,418.93/32,142.93 = 7,567.93/x
  3. Step 3: Cross multiply
    21,418.93x = 32,142.93 × 7,567.93
  4. Step 4: Simplify right side
    21,418.93x = 243,255,444.23
  5. Step 5: Solve for x
    x = 243,255,444.23/21,418.93
  6. Step 6: Final answer
    x = 11,357.03

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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.