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Finding the Fourth Proportional to 18,999.01, 26,219.19 and 10,615.51

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Solution

The fourth proportional to 18,999.01, 26,219.19 and 10,615.51 is: 14,649.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.01 : 26,219.19 = 10,615.51 : x
  2. Step 2: Convert to fraction form
    18,999.01/26,219.19 = 10,615.51/x
  3. Step 3: Cross multiply
    18,999.01x = 26,219.19 × 10,615.51
  4. Step 4: Simplify right side
    18,999.01x = 278,330,073.64
  5. Step 5: Solve for x
    x = 278,330,073.64/18,999.01
  6. Step 6: Final answer
    x = 14,649.71

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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.