Home / 12,374.20-18,572.10-9,911.80

Finding the Fourth Proportional to 12,374.20, 18,572.10 and 9,911.80

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Solution

The fourth proportional to 12,374.20, 18,572.10 and 9,911.80 is: 14,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,374.20 : 18,572.10 = 9,911.80 : x
  2. Step 2: Convert to fraction form
    12,374.20/18,572.10 = 9,911.80/x
  3. Step 3: Cross multiply
    12,374.20x = 18,572.10 × 9,911.80
  4. Step 4: Simplify right side
    12,374.20x = 184,082,940.78
  5. Step 5: Solve for x
    x = 184,082,940.78/12,374.20
  6. Step 6: Final answer
    x = 14,876.35

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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.