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Finding the Fourth Proportional to 31,407.87, 43,345.62 and 17,263.47

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Solution

The fourth proportional to 31,407.87, 43,345.62 and 17,263.47 is: 23,825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,407.87 : 43,345.62 = 17,263.47 : x
  2. Step 2: Convert to fraction form
    31,407.87/43,345.62 = 17,263.47/x
  3. Step 3: Cross multiply
    31,407.87x = 43,345.62 × 17,263.47
  4. Step 4: Simplify right side
    31,407.87x = 748,295,810.50
  5. Step 5: Solve for x
    x = 748,295,810.50/31,407.87
  6. Step 6: Final answer
    x = 23,825.11

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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.