Home / 13,099.05-18,076.91-7,130.84

Finding the Fourth Proportional to 13,099.05, 18,076.91 and 7,130.84

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Solution

The fourth proportional to 13,099.05, 18,076.91 and 7,130.84 is: 9,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.05 : 18,076.91 = 7,130.84 : x
  2. Step 2: Convert to fraction form
    13,099.05/18,076.91 = 7,130.84/x
  3. Step 3: Cross multiply
    13,099.05x = 18,076.91 × 7,130.84
  4. Step 4: Simplify right side
    13,099.05x = 128,903,426.87
  5. Step 5: Solve for x
    x = 128,903,426.87/13,099.05
  6. Step 6: Final answer
    x = 9,840.67

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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.