Home / 19,985.49-30,012.26-19,149.57

Finding the Fourth Proportional to 19,985.49, 30,012.26 and 19,149.57

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Solution

The fourth proportional to 19,985.49, 30,012.26 and 19,149.57 is: 28,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.49 : 30,012.26 = 19,149.57 : x
  2. Step 2: Convert to fraction form
    19,985.49/30,012.26 = 19,149.57/x
  3. Step 3: Cross multiply
    19,985.49x = 30,012.26 × 19,149.57
  4. Step 4: Simplify right side
    19,985.49x = 574,721,777.98
  5. Step 5: Solve for x
    x = 574,721,777.98/19,985.49
  6. Step 6: Final answer
    x = 28,756.95

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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.