Home / 13,072.71-18,039.85-7,104.25

Finding the Fourth Proportional to 13,072.71, 18,039.85 and 7,104.25

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Solution

The fourth proportional to 13,072.71, 18,039.85 and 7,104.25 is: 9,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.71 : 18,039.85 = 7,104.25 : x
  2. Step 2: Convert to fraction form
    13,072.71/18,039.85 = 7,104.25/x
  3. Step 3: Cross multiply
    13,072.71x = 18,039.85 × 7,104.25
  4. Step 4: Simplify right side
    13,072.71x = 128,159,609.15
  5. Step 5: Solve for x
    x = 128,159,609.15/13,072.71
  6. Step 6: Final answer
    x = 9,803.60

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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.