Home / 13,186.90-19,780.55-4,302.19

Finding the Fourth Proportional to 13,186.90, 19,780.55 and 4,302.19

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Solution

The fourth proportional to 13,186.90, 19,780.55 and 4,302.19 is: 6,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.90 : 19,780.55 = 4,302.19 : x
  2. Step 2: Convert to fraction form
    13,186.90/19,780.55 = 4,302.19/x
  3. Step 3: Cross multiply
    13,186.90x = 19,780.55 × 4,302.19
  4. Step 4: Simplify right side
    13,186.90x = 85,099,684.40
  5. Step 5: Solve for x
    x = 85,099,684.40/13,186.90
  6. Step 6: Final answer
    x = 6,453.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.