Home / 13,055.14-18,015.85-7,086.76

Finding the Fourth Proportional to 13,055.14, 18,015.85 and 7,086.76

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Solution

The fourth proportional to 13,055.14, 18,015.85 and 7,086.76 is: 9,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.14 : 18,015.85 = 7,086.76 : x
  2. Step 2: Convert to fraction form
    13,055.14/18,015.85 = 7,086.76/x
  3. Step 3: Cross multiply
    13,055.14x = 18,015.85 × 7,086.76
  4. Step 4: Simplify right side
    13,055.14x = 127,673,968.96
  5. Step 5: Solve for x
    x = 127,673,968.96/13,055.14
  6. Step 6: Final answer
    x = 9,779.59

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Half scale
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Double scale
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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.