Home / 20,275.63-27,977.73-13,211.62

Finding the Fourth Proportional to 20,275.63, 27,977.73 and 13,211.62

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Solution

The fourth proportional to 20,275.63, 27,977.73 and 13,211.62 is: 18,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.63 : 27,977.73 = 13,211.62 : x
  2. Step 2: Convert to fraction form
    20,275.63/27,977.73 = 13,211.62/x
  3. Step 3: Cross multiply
    20,275.63x = 27,977.73 × 13,211.62
  4. Step 4: Simplify right side
    20,275.63x = 369,631,137.22
  5. Step 5: Solve for x
    x = 369,631,137.22/20,275.63
  6. Step 6: Final answer
    x = 18,230.32

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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.