Home / 30,290.76-45,445.86-13,643.64

Finding the Fourth Proportional to 30,290.76, 45,445.86 and 13,643.64

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Solution

The fourth proportional to 30,290.76, 45,445.86 and 13,643.64 is: 20,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,290.76 : 45,445.86 = 13,643.64 : x
  2. Step 2: Convert to fraction form
    30,290.76/45,445.86 = 13,643.64/x
  3. Step 3: Cross multiply
    30,290.76x = 45,445.86 × 13,643.64
  4. Step 4: Simplify right side
    30,290.76x = 620,046,953.33
  5. Step 5: Solve for x
    x = 620,046,953.33/30,290.76
  6. Step 6: Final answer
    x = 20,469.84

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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.