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Finding the Fourth Proportional to 28,797.65, 39,722.56 and 19,829.58

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Solution

The fourth proportional to 28,797.65, 39,722.56 and 19,829.58 is: 27,352.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,797.65 : 39,722.56 = 19,829.58 : x
  2. Step 2: Convert to fraction form
    28,797.65/39,722.56 = 19,829.58/x
  3. Step 3: Cross multiply
    28,797.65x = 39,722.56 × 19,829.58
  4. Step 4: Simplify right side
    28,797.65x = 787,681,681.32
  5. Step 5: Solve for x
    x = 787,681,681.32/28,797.65
  6. Step 6: Final answer
    x = 27,352.29

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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.