Home / 13,777.92-20,666.88-4,290.39

Finding the Fourth Proportional to 13,777.92, 20,666.88 and 4,290.39

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Solution

The fourth proportional to 13,777.92, 20,666.88 and 4,290.39 is: 6,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.92 : 20,666.88 = 4,290.39 : x
  2. Step 2: Convert to fraction form
    13,777.92/20,666.88 = 4,290.39/x
  3. Step 3: Cross multiply
    13,777.92x = 20,666.88 × 4,290.39
  4. Step 4: Simplify right side
    13,777.92x = 88,668,975.28
  5. Step 5: Solve for x
    x = 88,668,975.28/13,777.92
  6. Step 6: Final answer
    x = 6,435.59

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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.