Home / 28,296.84-39,048.54-15,722.40

Finding the Fourth Proportional to 28,296.84, 39,048.54 and 15,722.40

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Solution

The fourth proportional to 28,296.84, 39,048.54 and 15,722.40 is: 21,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296.84 : 39,048.54 = 15,722.40 : x
  2. Step 2: Convert to fraction form
    28,296.84/39,048.54 = 15,722.40/x
  3. Step 3: Cross multiply
    28,296.84x = 39,048.54 × 15,722.40
  4. Step 4: Simplify right side
    28,296.84x = 613,936,765.30
  5. Step 5: Solve for x
    x = 613,936,765.30/28,296.84
  6. Step 6: Final answer
    x = 21,696.30

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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.