Home / 12,909.86-19,362.96-4,143.62

Finding the Fourth Proportional to 12,909.86, 19,362.96 and 4,143.62

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Solution

The fourth proportional to 12,909.86, 19,362.96 and 4,143.62 is: 6,214.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.86 : 19,362.96 = 4,143.62 : x
  2. Step 2: Convert to fraction form
    12,909.86/19,362.96 = 4,143.62/x
  3. Step 3: Cross multiply
    12,909.86x = 19,362.96 × 4,143.62
  4. Step 4: Simplify right side
    12,909.86x = 80,232,748.32
  5. Step 5: Solve for x
    x = 80,232,748.32/12,909.86
  6. Step 6: Final answer
    x = 6,214.84

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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.