Home / 19,985.16-27,576.38-11,485.64

Finding the Fourth Proportional to 19,985.16, 27,576.38 and 11,485.64

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Solution

The fourth proportional to 19,985.16, 27,576.38 and 11,485.64 is: 15,848.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.16 : 27,576.38 = 11,485.64 : x
  2. Step 2: Convert to fraction form
    19,985.16/27,576.38 = 11,485.64/x
  3. Step 3: Cross multiply
    19,985.16x = 27,576.38 × 11,485.64
  4. Step 4: Simplify right side
    19,985.16x = 316,732,177.87
  5. Step 5: Solve for x
    x = 316,732,177.87/19,985.16
  6. Step 6: Final answer
    x = 15,848.37

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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.