Home / 13,539.49-18,667.36-8,751.39

Finding the Fourth Proportional to 13,539.49, 18,667.36 and 8,751.39

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Solution

The fourth proportional to 13,539.49, 18,667.36 and 8,751.39 is: 12,065.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.49 : 18,667.36 = 8,751.39 : x
  2. Step 2: Convert to fraction form
    13,539.49/18,667.36 = 8,751.39/x
  3. Step 3: Cross multiply
    13,539.49x = 18,667.36 × 8,751.39
  4. Step 4: Simplify right side
    13,539.49x = 163,365,347.63
  5. Step 5: Solve for x
    x = 163,365,347.63/13,539.49
  6. Step 6: Final answer
    x = 12,065.84

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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.