Home / 18,143.78-27,207.46-6,457.30

Finding the Fourth Proportional to 18,143.78, 27,207.46 and 6,457.30

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Solution

The fourth proportional to 18,143.78, 27,207.46 and 6,457.30 is: 9,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.78 : 27,207.46 = 6,457.30 : x
  2. Step 2: Convert to fraction form
    18,143.78/27,207.46 = 6,457.30/x
  3. Step 3: Cross multiply
    18,143.78x = 27,207.46 × 6,457.30
  4. Step 4: Simplify right side
    18,143.78x = 175,686,671.51
  5. Step 5: Solve for x
    x = 175,686,671.51/18,143.78
  6. Step 6: Final answer
    x = 9,683.03

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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.