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Finding the Fourth Proportional to 18,993, 26,210.34 and 10,609.68

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Solution

The fourth proportional to 18,993, 26,210.34 and 10,609.68 is: 14,641.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993 : 26,210.34 = 10,609.68 : x
  2. Step 2: Convert to fraction form
    18,993/26,210.34 = 10,609.68/x
  3. Step 3: Cross multiply
    18,993x = 26,210.34 × 10,609.68
  4. Step 4: Simplify right side
    18,993x = 278,083,320.09
  5. Step 5: Solve for x
    x = 278,083,320.09/18,993
  6. Step 6: Final answer
    x = 14,641.36

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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.