Home / 20,424.05-30,642.00-7,277.45

Finding the Fourth Proportional to 20,424.05, 30,642.00 and 7,277.45

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Solution

The fourth proportional to 20,424.05, 30,642.00 and 7,277.45 is: 10,918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.05 : 30,642.00 = 7,277.45 : x
  2. Step 2: Convert to fraction form
    20,424.05/30,642.00 = 7,277.45/x
  3. Step 3: Cross multiply
    20,424.05x = 30,642.00 × 7,277.45
  4. Step 4: Simplify right side
    20,424.05x = 222,995,442.40
  5. Step 5: Solve for x
    x = 222,995,442.40/20,424.05
  6. Step 6: Final answer
    x = 10,918.28

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1.5x scale

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.