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Finding the Fourth Proportional to 18,708.84, 28,048.44 and 9,343.70

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Solution

The fourth proportional to 18,708.84, 28,048.44 and 9,343.70 is: 14,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.84 : 28,048.44 = 9,343.70 : x
  2. Step 2: Convert to fraction form
    18,708.84/28,048.44 = 9,343.70/x
  3. Step 3: Cross multiply
    18,708.84x = 28,048.44 × 9,343.70
  4. Step 4: Simplify right side
    18,708.84x = 262,076,162.11
  5. Step 5: Solve for x
    x = 262,076,162.11/18,708.84
  6. Step 6: Final answer
    x = 14,008.15

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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.