Home / 13,969.83-20,967.30-12,486.72

Finding the Fourth Proportional to 13,969.83, 20,967.30 and 12,486.72

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Solution

The fourth proportional to 13,969.83, 20,967.30 and 12,486.72 is: 18,741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.83 : 20,967.30 = 12,486.72 : x
  2. Step 2: Convert to fraction form
    13,969.83/20,967.30 = 12,486.72/x
  3. Step 3: Cross multiply
    13,969.83x = 20,967.30 × 12,486.72
  4. Step 4: Simplify right side
    13,969.83x = 261,812,804.26
  5. Step 5: Solve for x
    x = 261,812,804.26/13,969.83
  6. Step 6: Final answer
    x = 18,741.30

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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.