Home / 30,190.42-45,271.07-12,655.54

Finding the Fourth Proportional to 30,190.42, 45,271.07 and 12,655.54

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Solution

The fourth proportional to 30,190.42, 45,271.07 and 12,655.54 is: 18,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,190.42 : 45,271.07 = 12,655.54 : x
  2. Step 2: Convert to fraction form
    30,190.42/45,271.07 = 12,655.54/x
  3. Step 3: Cross multiply
    30,190.42x = 45,271.07 × 12,655.54
  4. Step 4: Simplify right side
    30,190.42x = 572,929,773.95
  5. Step 5: Solve for x
    x = 572,929,773.95/30,190.42
  6. Step 6: Final answer
    x = 18,977.20

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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.