Home / 10,078.12-15,126.78-6,190.12

Finding the Fourth Proportional to 10,078.12, 15,126.78 and 6,190.12

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Solution

The fourth proportional to 10,078.12, 15,126.78 and 6,190.12 is: 9,291.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.12 : 15,126.78 = 6,190.12 : x
  2. Step 2: Convert to fraction form
    10,078.12/15,126.78 = 6,190.12/x
  3. Step 3: Cross multiply
    10,078.12x = 15,126.78 × 6,190.12
  4. Step 4: Simplify right side
    10,078.12x = 93,636,583.41
  5. Step 5: Solve for x
    x = 93,636,583.41/10,078.12
  6. Step 6: Final answer
    x = 9,291.08

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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.