Home / 19,886.53-27,427.86-12,328.63

Finding the Fourth Proportional to 19,886.53, 27,427.86 and 12,328.63

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Solution

The fourth proportional to 19,886.53, 27,427.86 and 12,328.63 is: 17,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.53 : 27,427.86 = 12,328.63 : x
  2. Step 2: Convert to fraction form
    19,886.53/27,427.86 = 12,328.63/x
  3. Step 3: Cross multiply
    19,886.53x = 27,427.86 × 12,328.63
  4. Step 4: Simplify right side
    19,886.53x = 338,147,937.63
  5. Step 5: Solve for x
    x = 338,147,937.63/19,886.53
  6. Step 6: Final answer
    x = 17,003.87

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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.