Home / 11,085.37-15,317.84-8,428.16

Finding the Fourth Proportional to 11,085.37, 15,317.84 and 8,428.16

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Solution

The fourth proportional to 11,085.37, 15,317.84 and 8,428.16 is: 11,646.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,085.37 : 15,317.84 = 8,428.16 : x
  2. Step 2: Convert to fraction form
    11,085.37/15,317.84 = 8,428.16/x
  3. Step 3: Cross multiply
    11,085.37x = 15,317.84 × 8,428.16
  4. Step 4: Simplify right side
    11,085.37x = 129,101,206.37
  5. Step 5: Solve for x
    x = 129,101,206.37/11,085.37
  6. Step 6: Final answer
    x = 11,646.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.