Home / 19,092.16-28,520.88-13,781.80

Finding the Fourth Proportional to 19,092.16, 28,520.88 and 13,781.80

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Solution

The fourth proportional to 19,092.16, 28,520.88 and 13,781.80 is: 20,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,092.16 : 28,520.88 = 13,781.80 : x
  2. Step 2: Convert to fraction form
    19,092.16/28,520.88 = 13,781.80/x
  3. Step 3: Cross multiply
    19,092.16x = 28,520.88 × 13,781.80
  4. Step 4: Simplify right side
    19,092.16x = 393,069,063.98
  5. Step 5: Solve for x
    x = 393,069,063.98/19,092.16
  6. Step 6: Final answer
    x = 20,587.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.