Home / 30,372.26-45,575.40-12,855.20

Finding the Fourth Proportional to 30,372.26, 45,575.40 and 12,855.20

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Solution

The fourth proportional to 30,372.26, 45,575.40 and 12,855.20 is: 19,290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.26 : 45,575.40 = 12,855.20 : x
  2. Step 2: Convert to fraction form
    30,372.26/45,575.40 = 12,855.20/x
  3. Step 3: Cross multiply
    30,372.26x = 45,575.40 × 12,855.20
  4. Step 4: Simplify right side
    30,372.26x = 585,880,882.08
  5. Step 5: Solve for x
    x = 585,880,882.08/30,372.26
  6. Step 6: Final answer
    x = 19,290.00

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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.