Home / 13,205.38-18,223.42-7,237.28

Finding the Fourth Proportional to 13,205.38, 18,223.42 and 7,237.28

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Solution

The fourth proportional to 13,205.38, 18,223.42 and 7,237.28 is: 9,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.38 : 18,223.42 = 7,237.28 : x
  2. Step 2: Convert to fraction form
    13,205.38/18,223.42 = 7,237.28/x
  3. Step 3: Cross multiply
    13,205.38x = 18,223.42 × 7,237.28
  4. Step 4: Simplify right side
    13,205.38x = 131,887,975.00
  5. Step 5: Solve for x
    x = 131,887,975.00/13,205.38
  6. Step 6: Final answer
    x = 9,987.45

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Half scale
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Double scale
Find fourth proportional to 13,206.38, 18,224.80 and 7,238.28
Similar ratio
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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.