Home / 11,180.70-15,429.55-6,400.63

Finding the Fourth Proportional to 11,180.70, 15,429.55 and 6,400.63

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Solution

The fourth proportional to 11,180.70, 15,429.55 and 6,400.63 is: 8,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.70 : 15,429.55 = 6,400.63 : x
  2. Step 2: Convert to fraction form
    11,180.70/15,429.55 = 6,400.63/x
  3. Step 3: Cross multiply
    11,180.70x = 15,429.55 × 6,400.63
  4. Step 4: Simplify right side
    11,180.70x = 98,758,830.51
  5. Step 5: Solve for x
    x = 98,758,830.51/11,180.70
  6. Step 6: Final answer
    x = 8,832.97

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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.