Home / 13,110.80-18,090.08-7,804.58

Finding the Fourth Proportional to 13,110.80, 18,090.08 and 7,804.58

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Solution

The fourth proportional to 13,110.80, 18,090.08 and 7,804.58 is: 10,768.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.80 : 18,090.08 = 7,804.58 : x
  2. Step 2: Convert to fraction form
    13,110.80/18,090.08 = 7,804.58/x
  3. Step 3: Cross multiply
    13,110.80x = 18,090.08 × 7,804.58
  4. Step 4: Simplify right side
    13,110.80x = 141,185,476.57
  5. Step 5: Solve for x
    x = 141,185,476.57/13,110.80
  6. Step 6: Final answer
    x = 10,768.64

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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.