Home / 13,328.88-18,396.75-9,090.05

Finding the Fourth Proportional to 13,328.88, 18,396.75 and 9,090.05

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Solution

The fourth proportional to 13,328.88, 18,396.75 and 9,090.05 is: 12,546.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.88 : 18,396.75 = 9,090.05 : x
  2. Step 2: Convert to fraction form
    13,328.88/18,396.75 = 9,090.05/x
  3. Step 3: Cross multiply
    13,328.88x = 18,396.75 × 9,090.05
  4. Step 4: Simplify right side
    13,328.88x = 167,227,294.49
  5. Step 5: Solve for x
    x = 167,227,294.49/13,328.88
  6. Step 6: Final answer
    x = 12,546.24

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Half scale
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Double scale
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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.