Home / 30,313.62-45,476.64-12,783.42

Finding the Fourth Proportional to 30,313.62, 45,476.64 and 12,783.42

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Solution

The fourth proportional to 30,313.62, 45,476.64 and 12,783.42 is: 19,177.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,313.62 : 45,476.64 = 12,783.42 : x
  2. Step 2: Convert to fraction form
    30,313.62/45,476.64 = 12,783.42/x
  3. Step 3: Cross multiply
    30,313.62x = 45,476.64 × 12,783.42
  4. Step 4: Simplify right side
    30,313.62x = 581,346,989.31
  5. Step 5: Solve for x
    x = 581,346,989.31/30,313.62
  6. Step 6: Final answer
    x = 19,177.75

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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.