Home / 12,055.39-16,638.21-7,338.79

Finding the Fourth Proportional to 12,055.39, 16,638.21 and 7,338.79

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Solution

The fourth proportional to 12,055.39, 16,638.21 and 7,338.79 is: 10,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,055.39 : 16,638.21 = 7,338.79 : x
  2. Step 2: Convert to fraction form
    12,055.39/16,638.21 = 7,338.79/x
  3. Step 3: Cross multiply
    12,055.39x = 16,638.21 × 7,338.79
  4. Step 4: Simplify right side
    12,055.39x = 122,104,209.28
  5. Step 5: Solve for x
    x = 122,104,209.28/12,055.39
  6. Step 6: Final answer
    x = 10,128.60

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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.