Home / 28,042.74-42,071.67-9,325.80

Finding the Fourth Proportional to 28,042.74, 42,071.67 and 9,325.80

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Solution

The fourth proportional to 28,042.74, 42,071.67 and 9,325.80 is: 13,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.74 : 42,071.67 = 9,325.80 : x
  2. Step 2: Convert to fraction form
    28,042.74/42,071.67 = 9,325.80/x
  3. Step 3: Cross multiply
    28,042.74x = 42,071.67 × 9,325.80
  4. Step 4: Simplify right side
    28,042.74x = 392,351,980.09
  5. Step 5: Solve for x
    x = 392,351,980.09/28,042.74
  6. Step 6: Final answer
    x = 13,991.21

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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.