Home / 11,429.94-15,778.08-8,285.52

Finding the Fourth Proportional to 11,429.94, 15,778.08 and 8,285.52

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Solution

The fourth proportional to 11,429.94, 15,778.08 and 8,285.52 is: 11,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.94 : 15,778.08 = 8,285.52 : x
  2. Step 2: Convert to fraction form
    11,429.94/15,778.08 = 8,285.52/x
  3. Step 3: Cross multiply
    11,429.94x = 15,778.08 × 8,285.52
  4. Step 4: Simplify right side
    11,429.94x = 130,729,597.40
  5. Step 5: Solve for x
    x = 130,729,597.40/11,429.94
  6. Step 6: Final answer
    x = 11,437.47

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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.