Home / 18,733.47-25,822.16-12,681.80

Finding the Fourth Proportional to 18,733.47, 25,822.16 and 12,681.80

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Solution

The fourth proportional to 18,733.47, 25,822.16 and 12,681.80 is: 17,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,733.47 : 25,822.16 = 12,681.80 : x
  2. Step 2: Convert to fraction form
    18,733.47/25,822.16 = 12,681.80/x
  3. Step 3: Cross multiply
    18,733.47x = 25,822.16 × 12,681.80
  4. Step 4: Simplify right side
    18,733.47x = 327,471,420.56
  5. Step 5: Solve for x
    x = 327,471,420.56/18,733.47
  6. Step 6: Final answer
    x = 17,480.56

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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.