Home / 13,099.14-18,076.86-7,130.88

Finding the Fourth Proportional to 13,099.14, 18,076.86 and 7,130.88

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Solution

The fourth proportional to 13,099.14, 18,076.86 and 7,130.88 is: 9,840.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.14 : 18,076.86 = 7,130.88 : x
  2. Step 2: Convert to fraction form
    13,099.14/18,076.86 = 7,130.88/x
  3. Step 3: Cross multiply
    13,099.14x = 18,076.86 × 7,130.88
  4. Step 4: Simplify right side
    13,099.14x = 128,903,919.44
  5. Step 5: Solve for x
    x = 128,903,919.44/13,099.14
  6. Step 6: Final answer
    x = 9,840.64

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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.