Home / 21,081.33-31,623.81-8,602.23

Finding the Fourth Proportional to 21,081.33, 31,623.81 and 8,602.23

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Solution

The fourth proportional to 21,081.33, 31,623.81 and 8,602.23 is: 12,904.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.33 : 31,623.81 = 8,602.23 : x
  2. Step 2: Convert to fraction form
    21,081.33/31,623.81 = 8,602.23/x
  3. Step 3: Cross multiply
    21,081.33x = 31,623.81 × 8,602.23
  4. Step 4: Simplify right side
    21,081.33x = 272,035,287.10
  5. Step 5: Solve for x
    x = 272,035,287.10/21,081.33
  6. Step 6: Final answer
    x = 12,904.09

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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.