Home / 15,696.24-21,651.22-9,318.51

Finding the Fourth Proportional to 15,696.24, 21,651.22 and 9,318.51

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Solution

The fourth proportional to 15,696.24, 21,651.22 and 9,318.51 is: 12,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.24 : 21,651.22 = 9,318.51 : x
  2. Step 2: Convert to fraction form
    15,696.24/21,651.22 = 9,318.51/x
  3. Step 3: Cross multiply
    15,696.24x = 21,651.22 × 9,318.51
  4. Step 4: Simplify right side
    15,696.24x = 201,756,955.23
  5. Step 5: Solve for x
    x = 201,756,955.23/15,696.24
  6. Step 6: Final answer
    x = 12,853.84

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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.