Home / 30,613.51-45,911.56-11,889.55

Finding the Fourth Proportional to 30,613.51, 45,911.56 and 11,889.55

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Solution

The fourth proportional to 30,613.51, 45,911.56 and 11,889.55 is: 17,830.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,613.51 : 45,911.56 = 11,889.55 : x
  2. Step 2: Convert to fraction form
    30,613.51/45,911.56 = 11,889.55/x
  3. Step 3: Cross multiply
    30,613.51x = 45,911.56 × 11,889.55
  4. Step 4: Simplify right side
    30,613.51x = 545,867,788.20
  5. Step 5: Solve for x
    x = 545,867,788.20/30,613.51
  6. Step 6: Final answer
    x = 17,830.94

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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.