Home / 20,977.77-28,950.27-13,022.58

Finding the Fourth Proportional to 20,977.77, 28,950.27 and 13,022.58

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Solution

The fourth proportional to 20,977.77, 28,950.27 and 13,022.58 is: 17,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.77 : 28,950.27 = 13,022.58 : x
  2. Step 2: Convert to fraction form
    20,977.77/28,950.27 = 13,022.58/x
  3. Step 3: Cross multiply
    20,977.77x = 28,950.27 × 13,022.58
  4. Step 4: Simplify right side
    20,977.77x = 377,007,207.10
  5. Step 5: Solve for x
    x = 377,007,207.10/20,977.77
  6. Step 6: Final answer
    x = 17,971.75

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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.