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Finding the Fourth Proportional to 18,772.56, 28,124.01 and 9,401.67

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Solution

The fourth proportional to 18,772.56, 28,124.01 and 9,401.67 is: 14,085.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.56 : 28,124.01 = 9,401.67 : x
  2. Step 2: Convert to fraction form
    18,772.56/28,124.01 = 9,401.67/x
  3. Step 3: Cross multiply
    18,772.56x = 28,124.01 × 9,401.67
  4. Step 4: Simplify right side
    18,772.56x = 264,412,661.10
  5. Step 5: Solve for x
    x = 264,412,661.10/18,772.56
  6. Step 6: Final answer
    x = 14,085.06

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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.