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Finding the Fourth Proportional to 21,685.03, 32,523.91 and 7,641.74

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Solution

The fourth proportional to 21,685.03, 32,523.91 and 7,641.74 is: 11,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.03 : 32,523.91 = 7,641.74 : x
  2. Step 2: Convert to fraction form
    21,685.03/32,523.91 = 7,641.74/x
  3. Step 3: Cross multiply
    21,685.03x = 32,523.91 × 7,641.74
  4. Step 4: Simplify right side
    21,685.03x = 248,539,326.21
  5. Step 5: Solve for x
    x = 248,539,326.21/21,685.03
  6. Step 6: Final answer
    x = 11,461.33

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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.