Home / 45,667.80-68,501.09-12,390.98

Finding the Fourth Proportional to 45,667.80, 68,501.09 and 12,390.98

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Solution

The fourth proportional to 45,667.80, 68,501.09 and 12,390.98 is: 18,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,667.80 : 68,501.09 = 12,390.98 : x
  2. Step 2: Convert to fraction form
    45,667.80/68,501.09 = 12,390.98/x
  3. Step 3: Cross multiply
    45,667.80x = 68,501.09 × 12,390.98
  4. Step 4: Simplify right side
    45,667.80x = 848,795,324.64
  5. Step 5: Solve for x
    x = 848,795,324.64/45,667.80
  6. Step 6: Final answer
    x = 18,586.30

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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.