Home / 20,135.03-27,781.86-12,177.08

Finding the Fourth Proportional to 20,135.03, 27,781.86 and 12,177.08

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Solution

The fourth proportional to 20,135.03, 27,781.86 and 12,177.08 is: 16,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.03 : 27,781.86 = 12,177.08 : x
  2. Step 2: Convert to fraction form
    20,135.03/27,781.86 = 12,177.08/x
  3. Step 3: Cross multiply
    20,135.03x = 27,781.86 × 12,177.08
  4. Step 4: Simplify right side
    20,135.03x = 338,301,931.77
  5. Step 5: Solve for x
    x = 338,301,931.77/20,135.03
  6. Step 6: Final answer
    x = 16,801.66

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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.