Home / 19,287.64-28,930.90-6,140.80

Finding the Fourth Proportional to 19,287.64, 28,930.90 and 6,140.80

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Solution

The fourth proportional to 19,287.64, 28,930.90 and 6,140.80 is: 9,211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.64 : 28,930.90 = 6,140.80 : x
  2. Step 2: Convert to fraction form
    19,287.64/28,930.90 = 6,140.80/x
  3. Step 3: Cross multiply
    19,287.64x = 28,930.90 × 6,140.80
  4. Step 4: Simplify right side
    19,287.64x = 177,658,870.72
  5. Step 5: Solve for x
    x = 177,658,870.72/19,287.64
  6. Step 6: Final answer
    x = 9,211.02

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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.