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Finding the Fourth Proportional to 9,368.80, 14,053.20 and 8,936.80

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Solution

The fourth proportional to 9,368.80, 14,053.20 and 8,936.80 is: 13,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.80 : 14,053.20 = 8,936.80 : x
  2. Step 2: Convert to fraction form
    9,368.80/14,053.20 = 8,936.80/x
  3. Step 3: Cross multiply
    9,368.80x = 14,053.20 × 8,936.80
  4. Step 4: Simplify right side
    9,368.80x = 125,590,637.76
  5. Step 5: Solve for x
    x = 125,590,637.76/9,368.80
  6. Step 6: Final answer
    x = 13,405.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.