Home / 15,728.21-21,696.65-9,350.26

Finding the Fourth Proportional to 15,728.21, 21,696.65 and 9,350.26

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Solution

The fourth proportional to 15,728.21, 21,696.65 and 9,350.26 is: 12,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.21 : 21,696.65 = 9,350.26 : x
  2. Step 2: Convert to fraction form
    15,728.21/21,696.65 = 9,350.26/x
  3. Step 3: Cross multiply
    15,728.21x = 21,696.65 × 9,350.26
  4. Step 4: Simplify right side
    15,728.21x = 202,869,377.89
  5. Step 5: Solve for x
    x = 202,869,377.89/15,728.21
  6. Step 6: Final answer
    x = 12,898.44

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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.