Home / 21,808.38-32,718.60-7,771.62

Finding the Fourth Proportional to 21,808.38, 32,718.60 and 7,771.62

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Solution

The fourth proportional to 21,808.38, 32,718.60 and 7,771.62 is: 11,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.38 : 32,718.60 = 7,771.62 : x
  2. Step 2: Convert to fraction form
    21,808.38/32,718.60 = 7,771.62/x
  3. Step 3: Cross multiply
    21,808.38x = 32,718.60 × 7,771.62
  4. Step 4: Simplify right side
    21,808.38x = 254,276,526.13
  5. Step 5: Solve for x
    x = 254,276,526.13/21,808.38
  6. Step 6: Final answer
    x = 11,659.58

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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.