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Finding the Fourth Proportional to 18,889.79, 26,068.37 and 10,392.14

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Solution

The fourth proportional to 18,889.79, 26,068.37 and 10,392.14 is: 14,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.79 : 26,068.37 = 10,392.14 : x
  2. Step 2: Convert to fraction form
    18,889.79/26,068.37 = 10,392.14/x
  3. Step 3: Cross multiply
    18,889.79x = 26,068.37 × 10,392.14
  4. Step 4: Simplify right side
    18,889.79x = 270,906,007.28
  5. Step 5: Solve for x
    x = 270,906,007.28/18,889.79
  6. Step 6: Final answer
    x = 14,341.40

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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.