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Finding the Fourth Proportional to 18,928.08, 26,121.93 and 10,430.19

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Solution

The fourth proportional to 18,928.08, 26,121.93 and 10,430.19 is: 14,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.08 : 26,121.93 = 10,430.19 : x
  2. Step 2: Convert to fraction form
    18,928.08/26,121.93 = 10,430.19/x
  3. Step 3: Cross multiply
    18,928.08x = 26,121.93 × 10,430.19
  4. Step 4: Simplify right side
    18,928.08x = 272,456,693.07
  5. Step 5: Solve for x
    x = 272,456,693.07/18,928.08
  6. Step 6: Final answer
    x = 14,394.31

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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.