Home / 13,206.36-18,224.60-7,237.68

Finding the Fourth Proportional to 13,206.36, 18,224.60 and 7,237.68

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Solution

The fourth proportional to 13,206.36, 18,224.60 and 7,237.68 is: 9,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.36 : 18,224.60 = 7,237.68 : x
  2. Step 2: Convert to fraction form
    13,206.36/18,224.60 = 7,237.68/x
  3. Step 3: Cross multiply
    13,206.36x = 18,224.60 × 7,237.68
  4. Step 4: Simplify right side
    13,206.36x = 131,903,822.93
  5. Step 5: Solve for x
    x = 131,903,822.93/13,206.36
  6. Step 6: Final answer
    x = 9,987.90

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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.