Home / 11,215.85-16,816.57-4,977.77

Finding the Fourth Proportional to 11,215.85, 16,816.57 and 4,977.77

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Solution

The fourth proportional to 11,215.85, 16,816.57 and 4,977.77 is: 7,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.85 : 16,816.57 = 4,977.77 : x
  2. Step 2: Convert to fraction form
    11,215.85/16,816.57 = 4,977.77/x
  3. Step 3: Cross multiply
    11,215.85x = 16,816.57 × 4,977.77
  4. Step 4: Simplify right side
    11,215.85x = 83,708,921.12
  5. Step 5: Solve for x
    x = 83,708,921.12/11,215.85
  6. Step 6: Final answer
    x = 7,463.45

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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.