Home / 16,772.43-25,143.15-7,278.78

Finding the Fourth Proportional to 16,772.43, 25,143.15 and 7,278.78

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Solution

The fourth proportional to 16,772.43, 25,143.15 and 7,278.78 is: 10,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,772.43 : 25,143.15 = 7,278.78 : x
  2. Step 2: Convert to fraction form
    16,772.43/25,143.15 = 7,278.78/x
  3. Step 3: Cross multiply
    16,772.43x = 25,143.15 × 7,278.78
  4. Step 4: Simplify right side
    16,772.43x = 183,011,457.36
  5. Step 5: Solve for x
    x = 183,011,457.36/16,772.43
  6. Step 6: Final answer
    x = 10,911.45

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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.