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Finding the Fourth Proportional to 18,990.18, 26,207.01 and 10,606.50

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Solution

The fourth proportional to 18,990.18, 26,207.01 and 10,606.50 is: 14,637.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.18 : 26,207.01 = 10,606.50 : x
  2. Step 2: Convert to fraction form
    18,990.18/26,207.01 = 10,606.50/x
  3. Step 3: Cross multiply
    18,990.18x = 26,207.01 × 10,606.50
  4. Step 4: Simplify right side
    18,990.18x = 277,964,651.57
  5. Step 5: Solve for x
    x = 277,964,651.57/18,990.18
  6. Step 6: Final answer
    x = 14,637.28

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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.