Home / 13,405.86-20,106.06-4,520.16

Finding the Fourth Proportional to 13,405.86, 20,106.06 and 4,520.16

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Solution

The fourth proportional to 13,405.86, 20,106.06 and 4,520.16 is: 6,779.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.86 : 20,106.06 = 4,520.16 : x
  2. Step 2: Convert to fraction form
    13,405.86/20,106.06 = 4,520.16/x
  3. Step 3: Cross multiply
    13,405.86x = 20,106.06 × 4,520.16
  4. Step 4: Simplify right side
    13,405.86x = 90,882,608.17
  5. Step 5: Solve for x
    x = 90,882,608.17/13,405.86
  6. Step 6: Final answer
    x = 6,779.32

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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.