Home / 11,885.40-17,821.46-4,870.31

Finding the Fourth Proportional to 11,885.40, 17,821.46 and 4,870.31

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Solution

The fourth proportional to 11,885.40, 17,821.46 and 4,870.31 is: 7,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.40 : 17,821.46 = 4,870.31 : x
  2. Step 2: Convert to fraction form
    11,885.40/17,821.46 = 4,870.31/x
  3. Step 3: Cross multiply
    11,885.40x = 17,821.46 × 4,870.31
  4. Step 4: Simplify right side
    11,885.40x = 86,795,957.92
  5. Step 5: Solve for x
    x = 86,795,957.92/11,885.40
  6. Step 6: Final answer
    x = 7,302.74

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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.