Home / 13,072.09-18,038.75-7,103.72

Finding the Fourth Proportional to 13,072.09, 18,038.75 and 7,103.72

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Solution

The fourth proportional to 13,072.09, 18,038.75 and 7,103.72 is: 9,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.09 : 18,038.75 = 7,103.72 : x
  2. Step 2: Convert to fraction form
    13,072.09/18,038.75 = 7,103.72/x
  3. Step 3: Cross multiply
    13,072.09x = 18,038.75 × 7,103.72
  4. Step 4: Simplify right side
    13,072.09x = 128,142,103.44
  5. Step 5: Solve for x
    x = 128,142,103.44/13,072.09
  6. Step 6: Final answer
    x = 9,802.73

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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.