Home / 13,436.60-20,111.72-7,180.98

Finding the Fourth Proportional to 13,436.60, 20,111.72 and 7,180.98

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Solution

The fourth proportional to 13,436.60, 20,111.72 and 7,180.98 is: 10,748.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.60 : 20,111.72 = 7,180.98 : x
  2. Step 2: Convert to fraction form
    13,436.60/20,111.72 = 7,180.98/x
  3. Step 3: Cross multiply
    13,436.60x = 20,111.72 × 7,180.98
  4. Step 4: Simplify right side
    13,436.60x = 144,421,859.09
  5. Step 5: Solve for x
    x = 144,421,859.09/13,436.60
  6. Step 6: Final answer
    x = 10,748.39

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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.