Home / 18,953.09-28,374.57-11,031.42

Finding the Fourth Proportional to 18,953.09, 28,374.57 and 11,031.42

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Solution

The fourth proportional to 18,953.09, 28,374.57 and 11,031.42 is: 16,515.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.09 : 28,374.57 = 11,031.42 : x
  2. Step 2: Convert to fraction form
    18,953.09/28,374.57 = 11,031.42/x
  3. Step 3: Cross multiply
    18,953.09x = 28,374.57 × 11,031.42
  4. Step 4: Simplify right side
    18,953.09x = 313,011,905.39
  5. Step 5: Solve for x
    x = 313,011,905.39/18,953.09
  6. Step 6: Final answer
    x = 16,515.09

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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.