Home / 30,109.68-45,156.24-12,576.60

Finding the Fourth Proportional to 30,109.68, 45,156.24 and 12,576.60

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Solution

The fourth proportional to 30,109.68, 45,156.24 and 12,576.60 is: 18,861.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.68 : 45,156.24 = 12,576.60 : x
  2. Step 2: Convert to fraction form
    30,109.68/45,156.24 = 12,576.60/x
  3. Step 3: Cross multiply
    30,109.68x = 45,156.24 × 12,576.60
  4. Step 4: Simplify right side
    30,109.68x = 567,911,967.98
  5. Step 5: Solve for x
    x = 567,911,967.98/30,109.68
  6. Step 6: Final answer
    x = 18,861.44

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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.