Home / 20,303.78-28,018.44-11,350.85

Finding the Fourth Proportional to 20,303.78, 28,018.44 and 11,350.85

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Solution

The fourth proportional to 20,303.78, 28,018.44 and 11,350.85 is: 15,663.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.78 : 28,018.44 = 11,350.85 : x
  2. Step 2: Convert to fraction form
    20,303.78/28,018.44 = 11,350.85/x
  3. Step 3: Cross multiply
    20,303.78x = 28,018.44 × 11,350.85
  4. Step 4: Simplify right side
    20,303.78x = 318,032,969.58
  5. Step 5: Solve for x
    x = 318,032,969.58/20,303.78
  6. Step 6: Final answer
    x = 15,663.74

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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.