Home / 13,308.95-18,370.19-9,331.04

Finding the Fourth Proportional to 13,308.95, 18,370.19 and 9,331.04

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Solution

The fourth proportional to 13,308.95, 18,370.19 and 9,331.04 is: 12,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.95 : 18,370.19 = 9,331.04 : x
  2. Step 2: Convert to fraction form
    13,308.95/18,370.19 = 9,331.04/x
  3. Step 3: Cross multiply
    13,308.95x = 18,370.19 × 9,331.04
  4. Step 4: Simplify right side
    13,308.95x = 171,412,977.70
  5. Step 5: Solve for x
    x = 171,412,977.70/13,308.95
  6. Step 6: Final answer
    x = 12,879.53

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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.