Home / 13,220.24-18,241.65-8,741.57

Finding the Fourth Proportional to 13,220.24, 18,241.65 and 8,741.57

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Solution

The fourth proportional to 13,220.24, 18,241.65 and 8,741.57 is: 12,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.24 : 18,241.65 = 8,741.57 : x
  2. Step 2: Convert to fraction form
    13,220.24/18,241.65 = 8,741.57/x
  3. Step 3: Cross multiply
    13,220.24x = 18,241.65 × 8,741.57
  4. Step 4: Simplify right side
    13,220.24x = 159,460,569.18
  5. Step 5: Solve for x
    x = 159,460,569.18/13,220.24
  6. Step 6: Final answer
    x = 12,061.86

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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.