Home / 30,375.26-45,579.90-12,858.20

Finding the Fourth Proportional to 30,375.26, 45,579.90 and 12,858.20

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Solution

The fourth proportional to 30,375.26, 45,579.90 and 12,858.20 is: 19,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,375.26 : 45,579.90 = 12,858.20 : x
  2. Step 2: Convert to fraction form
    30,375.26/45,579.90 = 12,858.20/x
  3. Step 3: Cross multiply
    30,375.26x = 45,579.90 × 12,858.20
  4. Step 4: Simplify right side
    30,375.26x = 586,075,470.18
  5. Step 5: Solve for x
    x = 586,075,470.18/30,375.26
  6. Step 6: Final answer
    x = 19,294.50

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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.