Home / 18,690.11-25,792.15-10,192.21

Finding the Fourth Proportional to 18,690.11, 25,792.15 and 10,192.21

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Solution

The fourth proportional to 18,690.11, 25,792.15 and 10,192.21 is: 14,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.11 : 25,792.15 = 10,192.21 : x
  2. Step 2: Convert to fraction form
    18,690.11/25,792.15 = 10,192.21/x
  3. Step 3: Cross multiply
    18,690.11x = 25,792.15 × 10,192.21
  4. Step 4: Simplify right side
    18,690.11x = 262,878,829.23
  5. Step 5: Solve for x
    x = 262,878,829.23/18,690.11
  6. Step 6: Final answer
    x = 14,065.13

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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.