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Finding the Fourth Proportional to 19,386.83, 26,751.78 and 10,888.31

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Solution

The fourth proportional to 19,386.83, 26,751.78 and 10,888.31 is: 15,024.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.83 : 26,751.78 = 10,888.31 : x
  2. Step 2: Convert to fraction form
    19,386.83/26,751.78 = 10,888.31/x
  3. Step 3: Cross multiply
    19,386.83x = 26,751.78 × 10,888.31
  4. Step 4: Simplify right side
    19,386.83x = 291,281,539.93
  5. Step 5: Solve for x
    x = 291,281,539.93/19,386.83
  6. Step 6: Final answer
    x = 15,024.72

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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.