Home / 10,859.20-16,288.80-4,715.20

Finding the Fourth Proportional to 10,859.20, 16,288.80 and 4,715.20

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Solution

The fourth proportional to 10,859.20, 16,288.80 and 4,715.20 is: 7,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.20 : 16,288.80 = 4,715.20 : x
  2. Step 2: Convert to fraction form
    10,859.20/16,288.80 = 4,715.20/x
  3. Step 3: Cross multiply
    10,859.20x = 16,288.80 × 4,715.20
  4. Step 4: Simplify right side
    10,859.20x = 76,804,949.76
  5. Step 5: Solve for x
    x = 76,804,949.76/10,859.20
  6. Step 6: Final answer
    x = 7,072.80

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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.