Home / 18,090.36-27,140.40-6,411.84

Finding the Fourth Proportional to 18,090.36, 27,140.40 and 6,411.84

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Solution

The fourth proportional to 18,090.36, 27,140.40 and 6,411.84 is: 9,619.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.36 : 27,140.40 = 6,411.84 : x
  2. Step 2: Convert to fraction form
    18,090.36/27,140.40 = 6,411.84/x
  3. Step 3: Cross multiply
    18,090.36x = 27,140.40 × 6,411.84
  4. Step 4: Simplify right side
    18,090.36x = 174,019,902.34
  5. Step 5: Solve for x
    x = 174,019,902.34/18,090.36
  6. Step 6: Final answer
    x = 9,619.48

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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.