Home / 20,430.36-28,194.12-12,046.68

Finding the Fourth Proportional to 20,430.36, 28,194.12 and 12,046.68

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Solution

The fourth proportional to 20,430.36, 28,194.12 and 12,046.68 is: 16,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.36 : 28,194.12 = 12,046.68 : x
  2. Step 2: Convert to fraction form
    20,430.36/28,194.12 = 12,046.68/x
  3. Step 3: Cross multiply
    20,430.36x = 28,194.12 × 12,046.68
  4. Step 4: Simplify right side
    20,430.36x = 339,645,541.52
  5. Step 5: Solve for x
    x = 339,645,541.52/20,430.36
  6. Step 6: Final answer
    x = 16,624.55

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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.