Home / 30,345.12-45,538.32-18,622.56

Finding the Fourth Proportional to 30,345.12, 45,538.32 and 18,622.56

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Solution

The fourth proportional to 30,345.12, 45,538.32 and 18,622.56 is: 27,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.12 : 45,538.32 = 18,622.56 : x
  2. Step 2: Convert to fraction form
    30,345.12/45,538.32 = 18,622.56/x
  3. Step 3: Cross multiply
    30,345.12x = 45,538.32 × 18,622.56
  4. Step 4: Simplify right side
    30,345.12x = 848,040,096.50
  5. Step 5: Solve for x
    x = 848,040,096.50/30,345.12
  6. Step 6: Final answer
    x = 27,946.51

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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.