Home / 30,350.87-45,512.64-11,617.79

Finding the Fourth Proportional to 30,350.87, 45,512.64 and 11,617.79

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Solution

The fourth proportional to 30,350.87, 45,512.64 and 11,617.79 is: 17,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.87 : 45,512.64 = 11,617.79 : x
  2. Step 2: Convert to fraction form
    30,350.87/45,512.64 = 11,617.79/x
  3. Step 3: Cross multiply
    30,350.87x = 45,512.64 × 11,617.79
  4. Step 4: Simplify right side
    30,350.87x = 528,756,407.65
  5. Step 5: Solve for x
    x = 528,756,407.65/30,350.87
  6. Step 6: Final answer
    x = 17,421.46

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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.