Home / 8,911.74-13,382.80-7,429.44

Finding the Fourth Proportional to 8,911.74, 13,382.80 and 7,429.44

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Solution

The fourth proportional to 8,911.74, 13,382.80 and 7,429.44 is: 11,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.74 : 13,382.80 = 7,429.44 : x
  2. Step 2: Convert to fraction form
    8,911.74/13,382.80 = 7,429.44/x
  3. Step 3: Cross multiply
    8,911.74x = 13,382.80 × 7,429.44
  4. Step 4: Simplify right side
    8,911.74x = 99,426,709.63
  5. Step 5: Solve for x
    x = 99,426,709.63/8,911.74
  6. Step 6: Final answer
    x = 11,156.82

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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.