Home / 28,202.48-42,303.82-7,142.52

Finding the Fourth Proportional to 28,202.48, 42,303.82 and 7,142.52

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Solution

The fourth proportional to 28,202.48, 42,303.82 and 7,142.52 is: 10,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,202.48 : 42,303.82 = 7,142.52 : x
  2. Step 2: Convert to fraction form
    28,202.48/42,303.82 = 7,142.52/x
  3. Step 3: Cross multiply
    28,202.48x = 42,303.82 × 7,142.52
  4. Step 4: Simplify right side
    28,202.48x = 302,155,880.43
  5. Step 5: Solve for x
    x = 302,155,880.43/28,202.48
  6. Step 6: Final answer
    x = 10,713.81

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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.