Home / 20,186.78-27,840.02-14,133.92

Finding the Fourth Proportional to 20,186.78, 27,840.02 and 14,133.92

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Solution

The fourth proportional to 20,186.78, 27,840.02 and 14,133.92 is: 19,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.78 : 27,840.02 = 14,133.92 : x
  2. Step 2: Convert to fraction form
    20,186.78/27,840.02 = 14,133.92/x
  3. Step 3: Cross multiply
    20,186.78x = 27,840.02 × 14,133.92
  4. Step 4: Simplify right side
    20,186.78x = 393,488,405.61
  5. Step 5: Solve for x
    x = 393,488,405.61/20,186.78
  6. Step 6: Final answer
    x = 19,492.39

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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.