Home / 13,609.06-18,783.47-9,790.90

Finding the Fourth Proportional to 13,609.06, 18,783.47 and 9,790.90

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Solution

The fourth proportional to 13,609.06, 18,783.47 and 9,790.90 is: 13,513.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.06 : 18,783.47 = 9,790.90 : x
  2. Step 2: Convert to fraction form
    13,609.06/18,783.47 = 9,790.90/x
  3. Step 3: Cross multiply
    13,609.06x = 18,783.47 × 9,790.90
  4. Step 4: Simplify right side
    13,609.06x = 183,907,076.42
  5. Step 5: Solve for x
    x = 183,907,076.42/13,609.06
  6. Step 6: Final answer
    x = 13,513.58

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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.