Home / 30,427.80-45,617.40-12,883.20

Finding the Fourth Proportional to 30,427.80, 45,617.40 and 12,883.20

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Solution

The fourth proportional to 30,427.80, 45,617.40 and 12,883.20 is: 19,314.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.80 : 45,617.40 = 12,883.20 : x
  2. Step 2: Convert to fraction form
    30,427.80/45,617.40 = 12,883.20/x
  3. Step 3: Cross multiply
    30,427.80x = 45,617.40 × 12,883.20
  4. Step 4: Simplify right side
    30,427.80x = 587,698,087.68
  5. Step 5: Solve for x
    x = 587,698,087.68/30,427.80
  6. Step 6: Final answer
    x = 19,314.51

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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.