Home / 18,536.16-25,569.20-12,860.72

Finding the Fourth Proportional to 18,536.16, 25,569.20 and 12,860.72

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Solution

The fourth proportional to 18,536.16, 25,569.20 and 12,860.72 is: 17,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,536.16 : 25,569.20 = 12,860.72 : x
  2. Step 2: Convert to fraction form
    18,536.16/25,569.20 = 12,860.72/x
  3. Step 3: Cross multiply
    18,536.16x = 25,569.20 × 12,860.72
  4. Step 4: Simplify right side
    18,536.16x = 328,838,321.82
  5. Step 5: Solve for x
    x = 328,838,321.82/18,536.16
  6. Step 6: Final answer
    x = 17,740.37

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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.