Home / 30,577.23-45,866.72-8,390.79

Finding the Fourth Proportional to 30,577.23, 45,866.72 and 8,390.79

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Solution

The fourth proportional to 30,577.23, 45,866.72 and 8,390.79 is: 12,586.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.23 : 45,866.72 = 8,390.79 : x
  2. Step 2: Convert to fraction form
    30,577.23/45,866.72 = 8,390.79/x
  3. Step 3: Cross multiply
    30,577.23x = 45,866.72 × 8,390.79
  4. Step 4: Simplify right side
    30,577.23x = 384,858,036.49
  5. Step 5: Solve for x
    x = 384,858,036.49/30,577.23
  6. Step 6: Final answer
    x = 12,586.43

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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.