Home / 15,106.80-20,847.86-8,392.96

Finding the Fourth Proportional to 15,106.80, 20,847.86 and 8,392.96

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Solution

The fourth proportional to 15,106.80, 20,847.86 and 8,392.96 is: 11,582.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.80 : 20,847.86 = 8,392.96 : x
  2. Step 2: Convert to fraction form
    15,106.80/20,847.86 = 8,392.96/x
  3. Step 3: Cross multiply
    15,106.80x = 20,847.86 × 8,392.96
  4. Step 4: Simplify right side
    15,106.80x = 174,975,232.37
  5. Step 5: Solve for x
    x = 174,975,232.37/15,106.80
  6. Step 6: Final answer
    x = 11,582.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.