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Finding the Fourth Proportional to 15,379.01, 21,223.74 and 8,573.48

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Solution

The fourth proportional to 15,379.01, 21,223.74 and 8,573.48 is: 11,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.01 : 21,223.74 = 8,573.48 : x
  2. Step 2: Convert to fraction form
    15,379.01/21,223.74 = 8,573.48/x
  3. Step 3: Cross multiply
    15,379.01x = 21,223.74 × 8,573.48
  4. Step 4: Simplify right side
    15,379.01x = 181,961,316.04
  5. Step 5: Solve for x
    x = 181,961,316.04/15,379.01
  6. Step 6: Final answer
    x = 11,831.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.