Home / 15,696.05-21,660.95-8,622.65

Finding the Fourth Proportional to 15,696.05, 21,660.95 and 8,622.65

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Solution

The fourth proportional to 15,696.05, 21,660.95 and 8,622.65 is: 11,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.05 : 21,660.95 = 8,622.65 : x
  2. Step 2: Convert to fraction form
    15,696.05/21,660.95 = 8,622.65/x
  3. Step 3: Cross multiply
    15,696.05x = 21,660.95 × 8,622.65
  4. Step 4: Simplify right side
    15,696.05x = 186,774,866.23
  5. Step 5: Solve for x
    x = 186,774,866.23/15,696.05
  6. Step 6: Final answer
    x = 11,899.49

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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.