Home / 15,220.86-21,002.10-8,504.34

Finding the Fourth Proportional to 15,220.86, 21,002.10 and 8,504.34

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Solution

The fourth proportional to 15,220.86, 21,002.10 and 8,504.34 is: 11,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.86 : 21,002.10 = 8,504.34 : x
  2. Step 2: Convert to fraction form
    15,220.86/21,002.10 = 8,504.34/x
  3. Step 3: Cross multiply
    15,220.86x = 21,002.10 × 8,504.34
  4. Step 4: Simplify right side
    15,220.86x = 178,608,999.11
  5. Step 5: Solve for x
    x = 178,608,999.11/15,220.86
  6. Step 6: Final answer
    x = 11,734.49

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Double scale
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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.