Home / 13,113.51-18,096.41-7,145.23

Finding the Fourth Proportional to 13,113.51, 18,096.41 and 7,145.23

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Solution

The fourth proportional to 13,113.51, 18,096.41 and 7,145.23 is: 9,860.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.51 : 18,096.41 = 7,145.23 : x
  2. Step 2: Convert to fraction form
    13,113.51/18,096.41 = 7,145.23/x
  3. Step 3: Cross multiply
    13,113.51x = 18,096.41 × 7,145.23
  4. Step 4: Simplify right side
    13,113.51x = 129,302,921.14
  5. Step 5: Solve for x
    x = 129,302,921.14/13,113.51
  6. Step 6: Final answer
    x = 9,860.28

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Half scale
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Double scale
Find fourth proportional to 13,114.51, 18,097.79 and 7,146.23
Similar ratio
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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.