Home / 15,218.48-21,001.58-8,504.39

Finding the Fourth Proportional to 15,218.48, 21,001.58 and 8,504.39

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Solution

The fourth proportional to 15,218.48, 21,001.58 and 8,504.39 is: 11,736.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.48 : 21,001.58 = 8,504.39 : x
  2. Step 2: Convert to fraction form
    15,218.48/21,001.58 = 8,504.39/x
  3. Step 3: Cross multiply
    15,218.48x = 21,001.58 × 8,504.39
  4. Step 4: Simplify right side
    15,218.48x = 178,605,668.81
  5. Step 5: Solve for x
    x = 178,605,668.81/15,218.48
  6. Step 6: Final answer
    x = 11,736.10

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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.