Home / 12,891.58-17,771.36-10,055.77

Finding the Fourth Proportional to 12,891.58, 17,771.36 and 10,055.77

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Solution

The fourth proportional to 12,891.58, 17,771.36 and 10,055.77 is: 13,862.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891.58 : 17,771.36 = 10,055.77 : x
  2. Step 2: Convert to fraction form
    12,891.58/17,771.36 = 10,055.77/x
  3. Step 3: Cross multiply
    12,891.58x = 17,771.36 × 10,055.77
  4. Step 4: Simplify right side
    12,891.58x = 178,704,614.04
  5. Step 5: Solve for x
    x = 178,704,614.04/12,891.58
  6. Step 6: Final answer
    x = 13,862.12

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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.