Home / 19,290.83-28,938.38-6,140.12

Finding the Fourth Proportional to 19,290.83, 28,938.38 and 6,140.12

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Solution

The fourth proportional to 19,290.83, 28,938.38 and 6,140.12 is: 9,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,290.83 : 28,938.38 = 6,140.12 : x
  2. Step 2: Convert to fraction form
    19,290.83/28,938.38 = 6,140.12/x
  3. Step 3: Cross multiply
    19,290.83x = 28,938.38 × 6,140.12
  4. Step 4: Simplify right side
    19,290.83x = 177,684,950.41
  5. Step 5: Solve for x
    x = 177,684,950.41/19,290.83
  6. Step 6: Final answer
    x = 9,210.85

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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.