Home / 12,338.52-18,488.34-6,783.60

Finding the Fourth Proportional to 12,338.52, 18,488.34 and 6,783.60

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Solution

The fourth proportional to 12,338.52, 18,488.34 and 6,783.60 is: 10,164.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.52 : 18,488.34 = 6,783.60 : x
  2. Step 2: Convert to fraction form
    12,338.52/18,488.34 = 6,783.60/x
  3. Step 3: Cross multiply
    12,338.52x = 18,488.34 × 6,783.60
  4. Step 4: Simplify right side
    12,338.52x = 125,417,503.22
  5. Step 5: Solve for x
    x = 125,417,503.22/12,338.52
  6. Step 6: Final answer
    x = 10,164.71

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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.