Home / 15,696.48-21,661.08-8,622.84

Finding the Fourth Proportional to 15,696.48, 21,661.08 and 8,622.84

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Solution

The fourth proportional to 15,696.48, 21,661.08 and 8,622.84 is: 11,899.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.48 : 21,661.08 = 8,622.84 : x
  2. Step 2: Convert to fraction form
    15,696.48/21,661.08 = 8,622.84/x
  3. Step 3: Cross multiply
    15,696.48x = 21,661.08 × 8,622.84
  4. Step 4: Simplify right side
    15,696.48x = 186,780,027.07
  5. Step 5: Solve for x
    x = 186,780,027.07/15,696.48
  6. Step 6: Final answer
    x = 11,899.48

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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.