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Finding the Fourth Proportional to 18,864.70, 28,297.05 and 18,554.42

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Solution

The fourth proportional to 18,864.70, 28,297.05 and 18,554.42 is: 27,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.70 : 28,297.05 = 18,554.42 : x
  2. Step 2: Convert to fraction form
    18,864.70/28,297.05 = 18,554.42/x
  3. Step 3: Cross multiply
    18,864.70x = 28,297.05 × 18,554.42
  4. Step 4: Simplify right side
    18,864.70x = 525,035,192.45
  5. Step 5: Solve for x
    x = 525,035,192.45/18,864.70
  6. Step 6: Final answer
    x = 27,831.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.