Home / 13,099.74-18,077.64-7,131.45

Finding the Fourth Proportional to 13,099.74, 18,077.64 and 7,131.45

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Solution

The fourth proportional to 13,099.74, 18,077.64 and 7,131.45 is: 9,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.74 : 18,077.64 = 7,131.45 : x
  2. Step 2: Convert to fraction form
    13,099.74/18,077.64 = 7,131.45/x
  3. Step 3: Cross multiply
    13,099.74x = 18,077.64 × 7,131.45
  4. Step 4: Simplify right side
    13,099.74x = 128,919,785.78
  5. Step 5: Solve for x
    x = 128,919,785.78/13,099.74
  6. Step 6: Final answer
    x = 9,841.40

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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.