Home / 30,276.94-45,420.84-12,507.60

Finding the Fourth Proportional to 30,276.94, 45,420.84 and 12,507.60

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Solution

The fourth proportional to 30,276.94, 45,420.84 and 12,507.60 is: 18,763.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,276.94 : 45,420.84 = 12,507.60 : x
  2. Step 2: Convert to fraction form
    30,276.94/45,420.84 = 12,507.60/x
  3. Step 3: Cross multiply
    30,276.94x = 45,420.84 × 12,507.60
  4. Step 4: Simplify right side
    30,276.94x = 568,105,698.38
  5. Step 5: Solve for x
    x = 568,105,698.38/30,276.94
  6. Step 6: Final answer
    x = 18,763.64

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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.