Home / 20,058.54-27,673.35-12,988.86

Finding the Fourth Proportional to 20,058.54, 27,673.35 and 12,988.86

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Solution

The fourth proportional to 20,058.54, 27,673.35 and 12,988.86 is: 17,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,058.54 : 27,673.35 = 12,988.86 : x
  2. Step 2: Convert to fraction form
    20,058.54/27,673.35 = 12,988.86/x
  3. Step 3: Cross multiply
    20,058.54x = 27,673.35 × 12,988.86
  4. Step 4: Simplify right side
    20,058.54x = 359,445,268.88
  5. Step 5: Solve for x
    x = 359,445,268.88/20,058.54
  6. Step 6: Final answer
    x = 17,919.81

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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.