Home / 12,081.10-18,123.45-4,289.26

Finding the Fourth Proportional to 12,081.10, 18,123.45 and 4,289.26

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Solution

The fourth proportional to 12,081.10, 18,123.45 and 4,289.26 is: 6,434.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.10 : 18,123.45 = 4,289.26 : x
  2. Step 2: Convert to fraction form
    12,081.10/18,123.45 = 4,289.26/x
  3. Step 3: Cross multiply
    12,081.10x = 18,123.45 × 4,289.26
  4. Step 4: Simplify right side
    12,081.10x = 77,736,189.15
  5. Step 5: Solve for x
    x = 77,736,189.15/12,081.10
  6. Step 6: Final answer
    x = 6,434.53

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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.