Home / 10,571.09-15,857.15-8,718.77

Finding the Fourth Proportional to 10,571.09, 15,857.15 and 8,718.77

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Solution

The fourth proportional to 10,571.09, 15,857.15 and 8,718.77 is: 13,078.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,571.09 : 15,857.15 = 8,718.77 : x
  2. Step 2: Convert to fraction form
    10,571.09/15,857.15 = 8,718.77/x
  3. Step 3: Cross multiply
    10,571.09x = 15,857.15 × 8,718.77
  4. Step 4: Simplify right side
    10,571.09x = 138,254,720.83
  5. Step 5: Solve for x
    x = 138,254,720.83/10,571.09
  6. Step 6: Final answer
    x = 13,078.57

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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.