Home / 13,205.34-18,223.40-7,237.23

Finding the Fourth Proportional to 13,205.34, 18,223.40 and 7,237.23

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Solution

The fourth proportional to 13,205.34, 18,223.40 and 7,237.23 is: 9,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.34 : 18,223.40 = 7,237.23 : x
  2. Step 2: Convert to fraction form
    13,205.34/18,223.40 = 7,237.23/x
  3. Step 3: Cross multiply
    13,205.34x = 18,223.40 × 7,237.23
  4. Step 4: Simplify right side
    13,205.34x = 131,886,901.00
  5. Step 5: Solve for x
    x = 131,886,901.00/13,205.34
  6. Step 6: Final answer
    x = 9,987.39

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Half scale
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Double scale
Find fourth proportional to 13,206.34, 18,224.78 and 7,238.23
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.