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Finding the Fourth Proportional to 18,998.91, 26,219.70 and 10,935.29

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Solution

The fourth proportional to 18,998.91, 26,219.70 and 10,935.29 is: 15,091.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.91 : 26,219.70 = 10,935.29 : x
  2. Step 2: Convert to fraction form
    18,998.91/26,219.70 = 10,935.29/x
  3. Step 3: Cross multiply
    18,998.91x = 26,219.70 × 10,935.29
  4. Step 4: Simplify right side
    18,998.91x = 286,720,088.76
  5. Step 5: Solve for x
    x = 286,720,088.76/18,998.91
  6. Step 6: Final answer
    x = 15,091.40

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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.