Home / 13,281.75-18,328.70-7,313.29

Finding the Fourth Proportional to 13,281.75, 18,328.70 and 7,313.29

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Solution

The fourth proportional to 13,281.75, 18,328.70 and 7,313.29 is: 10,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.75 : 18,328.70 = 7,313.29 : x
  2. Step 2: Convert to fraction form
    13,281.75/18,328.70 = 7,313.29/x
  3. Step 3: Cross multiply
    13,281.75x = 18,328.70 × 7,313.29
  4. Step 4: Simplify right side
    13,281.75x = 134,043,070.88
  5. Step 5: Solve for x
    x = 134,043,070.88/13,281.75
  6. Step 6: Final answer
    x = 10,092.27

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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.