Home / 18,856.12-28,287.83-7,168.43

Finding the Fourth Proportional to 18,856.12, 28,287.83 and 7,168.43

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Solution

The fourth proportional to 18,856.12, 28,287.83 and 7,168.43 is: 10,754.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,856.12 : 28,287.83 = 7,168.43 : x
  2. Step 2: Convert to fraction form
    18,856.12/28,287.83 = 7,168.43/x
  3. Step 3: Cross multiply
    18,856.12x = 28,287.83 × 7,168.43
  4. Step 4: Simplify right side
    18,856.12x = 202,779,284.89
  5. Step 5: Solve for x
    x = 202,779,284.89/18,856.12
  6. Step 6: Final answer
    x = 10,754.03

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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.