Home / 13,751.32-20,631.48-4,392.88

Finding the Fourth Proportional to 13,751.32, 20,631.48 and 4,392.88

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Solution

The fourth proportional to 13,751.32, 20,631.48 and 4,392.88 is: 6,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.32 : 20,631.48 = 4,392.88 : x
  2. Step 2: Convert to fraction form
    13,751.32/20,631.48 = 4,392.88/x
  3. Step 3: Cross multiply
    13,751.32x = 20,631.48 × 4,392.88
  4. Step 4: Simplify right side
    13,751.32x = 90,631,615.86
  5. Step 5: Solve for x
    x = 90,631,615.86/13,751.32
  6. Step 6: Final answer
    x = 6,590.76

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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.