Home / 13,055.24-18,015.75-7,086.78

Finding the Fourth Proportional to 13,055.24, 18,015.75 and 7,086.78

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Solution

The fourth proportional to 13,055.24, 18,015.75 and 7,086.78 is: 9,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.24 : 18,015.75 = 7,086.78 : x
  2. Step 2: Convert to fraction form
    13,055.24/18,015.75 = 7,086.78/x
  3. Step 3: Cross multiply
    13,055.24x = 18,015.75 × 7,086.78
  4. Step 4: Simplify right side
    13,055.24x = 127,673,656.79
  5. Step 5: Solve for x
    x = 127,673,656.79/13,055.24
  6. Step 6: Final answer
    x = 9,779.49

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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.