Home / 13,078.16-18,040.56-8,038.88

Finding the Fourth Proportional to 13,078.16, 18,040.56 and 8,038.88

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Solution

The fourth proportional to 13,078.16, 18,040.56 and 8,038.88 is: 11,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.16 : 18,040.56 = 8,038.88 : x
  2. Step 2: Convert to fraction form
    13,078.16/18,040.56 = 8,038.88/x
  3. Step 3: Cross multiply
    13,078.16x = 18,040.56 × 8,038.88
  4. Step 4: Simplify right side
    13,078.16x = 145,025,896.97
  5. Step 5: Solve for x
    x = 145,025,896.97/13,078.16
  6. Step 6: Final answer
    x = 11,089.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.