Home / 30,374.26-45,578.40-12,857.20

Finding the Fourth Proportional to 30,374.26, 45,578.40 and 12,857.20

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Solution

The fourth proportional to 30,374.26, 45,578.40 and 12,857.20 is: 19,293.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,374.26 : 45,578.40 = 12,857.20 : x
  2. Step 2: Convert to fraction form
    30,374.26/45,578.40 = 12,857.20/x
  3. Step 3: Cross multiply
    30,374.26x = 45,578.40 × 12,857.20
  4. Step 4: Simplify right side
    30,374.26x = 586,010,604.48
  5. Step 5: Solve for x
    x = 586,010,604.48/30,374.26
  6. Step 6: Final answer
    x = 19,293.00

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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.