Home / 13,781.16-19,017.59-8,114.63

Finding the Fourth Proportional to 13,781.16, 19,017.59 and 8,114.63

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Solution

The fourth proportional to 13,781.16, 19,017.59 and 8,114.63 is: 11,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.16 : 19,017.59 = 8,114.63 : x
  2. Step 2: Convert to fraction form
    13,781.16/19,017.59 = 8,114.63/x
  3. Step 3: Cross multiply
    13,781.16x = 19,017.59 × 8,114.63
  4. Step 4: Simplify right side
    13,781.16x = 154,320,570.68
  5. Step 5: Solve for x
    x = 154,320,570.68/13,781.16
  6. Step 6: Final answer
    x = 11,197.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.