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Finding the Fourth Proportional to 28,078.33, 42,117.33 and 7,018.27

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Solution

The fourth proportional to 28,078.33, 42,117.33 and 7,018.27 is: 10,527.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.33 : 42,117.33 = 7,018.27 : x
  2. Step 2: Convert to fraction form
    28,078.33/42,117.33 = 7,018.27/x
  3. Step 3: Cross multiply
    28,078.33x = 42,117.33 × 7,018.27
  4. Step 4: Simplify right side
    28,078.33x = 295,590,547.94
  5. Step 5: Solve for x
    x = 295,590,547.94/28,078.33
  6. Step 6: Final answer
    x = 10,527.36

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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.