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Finding the Fourth Proportional to 19,356.49, 26,712.21 and 10,860.45

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Solution

The fourth proportional to 19,356.49, 26,712.21 and 10,860.45 is: 14,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.49 : 26,712.21 = 10,860.45 : x
  2. Step 2: Convert to fraction form
    19,356.49/26,712.21 = 10,860.45/x
  3. Step 3: Cross multiply
    19,356.49x = 26,712.21 × 10,860.45
  4. Step 4: Simplify right side
    19,356.49x = 290,106,561.65
  5. Step 5: Solve for x
    x = 290,106,561.65/19,356.49
  6. Step 6: Final answer
    x = 14,987.56

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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.