Home / 10,968.30-16,448.40-5,419.80

Finding the Fourth Proportional to 10,968.30, 16,448.40 and 5,419.80

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Solution

The fourth proportional to 10,968.30, 16,448.40 and 5,419.80 is: 8,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.30 : 16,448.40 = 5,419.80 : x
  2. Step 2: Convert to fraction form
    10,968.30/16,448.40 = 5,419.80/x
  3. Step 3: Cross multiply
    10,968.30x = 16,448.40 × 5,419.80
  4. Step 4: Simplify right side
    10,968.30x = 89,147,038.32
  5. Step 5: Solve for x
    x = 89,147,038.32/10,968.30
  6. Step 6: Final answer
    x = 8,127.70

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Why These Related Problems?

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