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Finding the Fourth Proportional to 18,889, 26,066.82 and 10,505.32

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Solution

The fourth proportional to 18,889, 26,066.82 and 10,505.32 is: 14,497.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889 : 26,066.82 = 10,505.32 : x
  2. Step 2: Convert to fraction form
    18,889/26,066.82 = 10,505.32/x
  3. Step 3: Cross multiply
    18,889x = 26,066.82 × 10,505.32
  4. Step 4: Simplify right side
    18,889x = 273,840,285.48
  5. Step 5: Solve for x
    x = 273,840,285.48/18,889
  6. Step 6: Final answer
    x = 14,497.34

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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.