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Finding the Fourth Proportional to 21,923.34, 32,889.88 and 6,339.78

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Solution

The fourth proportional to 21,923.34, 32,889.88 and 6,339.78 is: 9,511.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.34 : 32,889.88 = 6,339.78 : x
  2. Step 2: Convert to fraction form
    21,923.34/32,889.88 = 6,339.78/x
  3. Step 3: Cross multiply
    21,923.34x = 32,889.88 × 6,339.78
  4. Step 4: Simplify right side
    21,923.34x = 208,514,603.43
  5. Step 5: Solve for x
    x = 208,514,603.43/21,923.34
  6. Step 6: Final answer
    x = 9,511.08

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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.