Home / 13,352.96-20,130.80-12,638.72

Finding the Fourth Proportional to 13,352.96, 20,130.80 and 12,638.72

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Solution

The fourth proportional to 13,352.96, 20,130.80 and 12,638.72 is: 19,054.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.96 : 20,130.80 = 12,638.72 : x
  2. Step 2: Convert to fraction form
    13,352.96/20,130.80 = 12,638.72/x
  3. Step 3: Cross multiply
    13,352.96x = 20,130.80 × 12,638.72
  4. Step 4: Simplify right side
    13,352.96x = 254,427,544.58
  5. Step 5: Solve for x
    x = 254,427,544.58/13,352.96
  6. Step 6: Final answer
    x = 19,054.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.