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Finding the Fourth Proportional to 21,726.55, 32,590.43 and 7,684.59

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Solution

The fourth proportional to 21,726.55, 32,590.43 and 7,684.59 is: 11,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.55 : 32,590.43 = 7,684.59 : x
  2. Step 2: Convert to fraction form
    21,726.55/32,590.43 = 7,684.59/x
  3. Step 3: Cross multiply
    21,726.55x = 32,590.43 × 7,684.59
  4. Step 4: Simplify right side
    21,726.55x = 250,444,092.47
  5. Step 5: Solve for x
    x = 250,444,092.47/21,726.55
  6. Step 6: Final answer
    x = 11,527.10

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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.