Home / 13,542.23-20,321.10-7,302.21

Finding the Fourth Proportional to 13,542.23, 20,321.10 and 7,302.21

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Solution

The fourth proportional to 13,542.23, 20,321.10 and 7,302.21 is: 10,957.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.23 : 20,321.10 = 7,302.21 : x
  2. Step 2: Convert to fraction form
    13,542.23/20,321.10 = 7,302.21/x
  3. Step 3: Cross multiply
    13,542.23x = 20,321.10 × 7,302.21
  4. Step 4: Simplify right side
    13,542.23x = 148,388,939.63
  5. Step 5: Solve for x
    x = 148,388,939.63/13,542.23
  6. Step 6: Final answer
    x = 10,957.50

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Half scale
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Double scale
Find fourth proportional to 13,543.23, 20,322.60 and 7,303.21
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.