Home / 18,307.49-25,285.10-12,328.79

Finding the Fourth Proportional to 18,307.49, 25,285.10 and 12,328.79

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Solution

The fourth proportional to 18,307.49, 25,285.10 and 12,328.79 is: 17,027.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.49 : 25,285.10 = 12,328.79 : x
  2. Step 2: Convert to fraction form
    18,307.49/25,285.10 = 12,328.79/x
  3. Step 3: Cross multiply
    18,307.49x = 25,285.10 × 12,328.79
  4. Step 4: Simplify right side
    18,307.49x = 311,734,499.96
  5. Step 5: Solve for x
    x = 311,734,499.96/18,307.49
  6. Step 6: Final answer
    x = 17,027.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.