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Finding the Fourth Proportional to 18,775.34, 25,919.32 and 10,816.04

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Solution

The fourth proportional to 18,775.34, 25,919.32 and 10,816.04 is: 14,931.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.34 : 25,919.32 = 10,816.04 : x
  2. Step 2: Convert to fraction form
    18,775.34/25,919.32 = 10,816.04/x
  3. Step 3: Cross multiply
    18,775.34x = 25,919.32 × 10,816.04
  4. Step 4: Simplify right side
    18,775.34x = 280,344,401.89
  5. Step 5: Solve for x
    x = 280,344,401.89/18,775.34
  6. Step 6: Final answer
    x = 14,931.52

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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.