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Finding the Fourth Proportional to 18,999.63, 26,218.89 and 10,501.25

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Solution

The fourth proportional to 18,999.63, 26,218.89 and 10,501.25 is: 14,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.63 : 26,218.89 = 10,501.25 : x
  2. Step 2: Convert to fraction form
    18,999.63/26,218.89 = 10,501.25/x
  3. Step 3: Cross multiply
    18,999.63x = 26,218.89 × 10,501.25
  4. Step 4: Simplify right side
    18,999.63x = 275,330,987.52
  5. Step 5: Solve for x
    x = 275,330,987.52/18,999.63
  6. Step 6: Final answer
    x = 14,491.39

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Half scale
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Double scale
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Similar ratio
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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.