Home / 13,078.12-18,047.66-9,735.88

Finding the Fourth Proportional to 13,078.12, 18,047.66 and 9,735.88

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Solution

The fourth proportional to 13,078.12, 18,047.66 and 9,735.88 is: 13,435.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.12 : 18,047.66 = 9,735.88 : x
  2. Step 2: Convert to fraction form
    13,078.12/18,047.66 = 9,735.88/x
  3. Step 3: Cross multiply
    13,078.12x = 18,047.66 × 9,735.88
  4. Step 4: Simplify right side
    13,078.12x = 175,709,852.04
  5. Step 5: Solve for x
    x = 175,709,852.04/13,078.12
  6. Step 6: Final answer
    x = 13,435.41

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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.