Home / 13,099.35-18,077.58-7,130.73

Finding the Fourth Proportional to 13,099.35, 18,077.58 and 7,130.73

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Solution

The fourth proportional to 13,099.35, 18,077.58 and 7,130.73 is: 9,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.35 : 18,077.58 = 7,130.73 : x
  2. Step 2: Convert to fraction form
    13,099.35/18,077.58 = 7,130.73/x
  3. Step 3: Cross multiply
    13,099.35x = 18,077.58 × 7,130.73
  4. Step 4: Simplify right side
    13,099.35x = 128,906,342.03
  5. Step 5: Solve for x
    x = 128,906,342.03/13,099.35
  6. Step 6: Final answer
    x = 9,840.67

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Half scale
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Double scale
Find fourth proportional to 13,100.35, 18,078.96 and 7,131.73
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.