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Finding the Fourth Proportional to 21,725.55, 32,582.79 and 9,239.13

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Solution

The fourth proportional to 21,725.55, 32,582.79 and 9,239.13 is: 13,856.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.55 : 32,582.79 = 9,239.13 : x
  2. Step 2: Convert to fraction form
    21,725.55/32,582.79 = 9,239.13/x
  3. Step 3: Cross multiply
    21,725.55x = 32,582.79 × 9,239.13
  4. Step 4: Simplify right side
    21,725.55x = 301,036,632.57
  5. Step 5: Solve for x
    x = 301,036,632.57/21,725.55
  6. Step 6: Final answer
    x = 13,856.34

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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.