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Finding the Fourth Proportional to 27,643.76, 38,148.39 and 15,068.51

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Solution

The fourth proportional to 27,643.76, 38,148.39 and 15,068.51 is: 20,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.76 : 38,148.39 = 15,068.51 : x
  2. Step 2: Convert to fraction form
    27,643.76/38,148.39 = 15,068.51/x
  3. Step 3: Cross multiply
    27,643.76x = 38,148.39 × 15,068.51
  4. Step 4: Simplify right side
    27,643.76x = 574,839,491.57
  5. Step 5: Solve for x
    x = 574,839,491.57/27,643.76
  6. Step 6: Final answer
    x = 20,794.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.