Home / 12,572.55-18,861.14-4,139.54

Finding the Fourth Proportional to 12,572.55, 18,861.14 and 4,139.54

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Solution

The fourth proportional to 12,572.55, 18,861.14 and 4,139.54 is: 6,210.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.55 : 18,861.14 = 4,139.54 : x
  2. Step 2: Convert to fraction form
    12,572.55/18,861.14 = 4,139.54/x
  3. Step 3: Cross multiply
    12,572.55x = 18,861.14 × 4,139.54
  4. Step 4: Simplify right side
    12,572.55x = 78,076,443.48
  5. Step 5: Solve for x
    x = 78,076,443.48/12,572.55
  6. Step 6: Final answer
    x = 6,210.07

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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.