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Finding the Fourth Proportional to 18,750.45, 28,116.99 and 6,901.23

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Solution

The fourth proportional to 18,750.45, 28,116.99 and 6,901.23 is: 10,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.45 : 28,116.99 = 6,901.23 : x
  2. Step 2: Convert to fraction form
    18,750.45/28,116.99 = 6,901.23/x
  3. Step 3: Cross multiply
    18,750.45x = 28,116.99 × 6,901.23
  4. Step 4: Simplify right side
    18,750.45x = 194,041,814.90
  5. Step 5: Solve for x
    x = 194,041,814.90/18,750.45
  6. Step 6: Final answer
    x = 10,348.65

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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.