Home / 20,618.15-28,450.64-11,544.02

Finding the Fourth Proportional to 20,618.15, 28,450.64 and 11,544.02

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Solution

The fourth proportional to 20,618.15, 28,450.64 and 11,544.02 is: 15,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.15 : 28,450.64 = 11,544.02 : x
  2. Step 2: Convert to fraction form
    20,618.15/28,450.64 = 11,544.02/x
  3. Step 3: Cross multiply
    20,618.15x = 28,450.64 × 11,544.02
  4. Step 4: Simplify right side
    20,618.15x = 328,434,750.47
  5. Step 5: Solve for x
    x = 328,434,750.47/20,618.15
  6. Step 6: Final answer
    x = 15,929.40

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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.