Home / 10,287.02-15,431.26-5,091.50

Finding the Fourth Proportional to 10,287.02, 15,431.26 and 5,091.50

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Solution

The fourth proportional to 10,287.02, 15,431.26 and 5,091.50 is: 7,637.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.02 : 15,431.26 = 5,091.50 : x
  2. Step 2: Convert to fraction form
    10,287.02/15,431.26 = 5,091.50/x
  3. Step 3: Cross multiply
    10,287.02x = 15,431.26 × 5,091.50
  4. Step 4: Simplify right side
    10,287.02x = 78,568,260.29
  5. Step 5: Solve for x
    x = 78,568,260.29/10,287.02
  6. Step 6: Final answer
    x = 7,637.61

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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.