Home / 13,238.71-18,269.54-7,270.50

Finding the Fourth Proportional to 13,238.71, 18,269.54 and 7,270.50

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Solution

The fourth proportional to 13,238.71, 18,269.54 and 7,270.50 is: 10,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.71 : 18,269.54 = 7,270.50 : x
  2. Step 2: Convert to fraction form
    13,238.71/18,269.54 = 7,270.50/x
  3. Step 3: Cross multiply
    13,238.71x = 18,269.54 × 7,270.50
  4. Step 4: Simplify right side
    13,238.71x = 132,828,708.75
  5. Step 5: Solve for x
    x = 132,828,708.75/13,238.71
  6. Step 6: Final answer
    x = 10,033.36

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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.