Home / 30,542.81-45,782.23-12,783.64

Finding the Fourth Proportional to 30,542.81, 45,782.23 and 12,783.64

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Solution

The fourth proportional to 30,542.81, 45,782.23 and 12,783.64 is: 19,162.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,542.81 : 45,782.23 = 12,783.64 : x
  2. Step 2: Convert to fraction form
    30,542.81/45,782.23 = 12,783.64/x
  3. Step 3: Cross multiply
    30,542.81x = 45,782.23 × 12,783.64
  4. Step 4: Simplify right side
    30,542.81x = 585,263,546.72
  5. Step 5: Solve for x
    x = 585,263,546.72/30,542.81
  6. Step 6: Final answer
    x = 19,162.07

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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.