Home / 20,673.39-30,970.95-12,214.59

Finding the Fourth Proportional to 20,673.39, 30,970.95 and 12,214.59

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Solution

The fourth proportional to 20,673.39, 30,970.95 and 12,214.59 is: 18,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.39 : 30,970.95 = 12,214.59 : x
  2. Step 2: Convert to fraction form
    20,673.39/30,970.95 = 12,214.59/x
  3. Step 3: Cross multiply
    20,673.39x = 30,970.95 × 12,214.59
  4. Step 4: Simplify right side
    20,673.39x = 378,297,518.32
  5. Step 5: Solve for x
    x = 378,297,518.32/20,673.39
  6. Step 6: Final answer
    x = 18,298.77

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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.