Home / 18,913.67-28,370.51-18,886.34

Finding the Fourth Proportional to 18,913.67, 28,370.51 and 18,886.34

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Solution

The fourth proportional to 18,913.67, 28,370.51 and 18,886.34 is: 28,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.67 : 28,370.51 = 18,886.34 : x
  2. Step 2: Convert to fraction form
    18,913.67/28,370.51 = 18,886.34/x
  3. Step 3: Cross multiply
    18,913.67x = 28,370.51 × 18,886.34
  4. Step 4: Simplify right side
    18,913.67x = 535,815,097.83
  5. Step 5: Solve for x
    x = 535,815,097.83/18,913.67
  6. Step 6: Final answer
    x = 28,329.51

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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.