Home / 13,365.48-18,443.10-7,986.86

Finding the Fourth Proportional to 13,365.48, 18,443.10 and 7,986.86

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Solution

The fourth proportional to 13,365.48, 18,443.10 and 7,986.86 is: 11,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.48 : 18,443.10 = 7,986.86 : x
  2. Step 2: Convert to fraction form
    13,365.48/18,443.10 = 7,986.86/x
  3. Step 3: Cross multiply
    13,365.48x = 18,443.10 × 7,986.86
  4. Step 4: Simplify right side
    13,365.48x = 147,302,365.45
  5. Step 5: Solve for x
    x = 147,302,365.45/13,365.48
  6. Step 6: Final answer
    x = 11,021.11

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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.