Home / 28,296.04-39,049.06-15,721.96

Finding the Fourth Proportional to 28,296.04, 39,049.06 and 15,721.96

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Solution

The fourth proportional to 28,296.04, 39,049.06 and 15,721.96 is: 21,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296.04 : 39,049.06 = 15,721.96 : x
  2. Step 2: Convert to fraction form
    28,296.04/39,049.06 = 15,721.96/x
  3. Step 3: Cross multiply
    28,296.04x = 39,049.06 × 15,721.96
  4. Step 4: Simplify right side
    28,296.04x = 613,927,759.36
  5. Step 5: Solve for x
    x = 613,927,759.36/28,296.04
  6. Step 6: Final answer
    x = 21,696.60

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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.