Home / 17,938.72-26,871.60-13,272.64

Finding the Fourth Proportional to 17,938.72, 26,871.60 and 13,272.64

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Solution

The fourth proportional to 17,938.72, 26,871.60 and 13,272.64 is: 19,881.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,938.72 : 26,871.60 = 13,272.64 : x
  2. Step 2: Convert to fraction form
    17,938.72/26,871.60 = 13,272.64/x
  3. Step 3: Cross multiply
    17,938.72x = 26,871.60 × 13,272.64
  4. Step 4: Simplify right side
    17,938.72x = 356,657,073.02
  5. Step 5: Solve for x
    x = 356,657,073.02/17,938.72
  6. Step 6: Final answer
    x = 19,881.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.