Home / 20,188.71-27,848.61-13,119.84

Finding the Fourth Proportional to 20,188.71, 27,848.61 and 13,119.84

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Solution

The fourth proportional to 20,188.71, 27,848.61 and 13,119.84 is: 18,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.71 : 27,848.61 = 13,119.84 : x
  2. Step 2: Convert to fraction form
    20,188.71/27,848.61 = 13,119.84/x
  3. Step 3: Cross multiply
    20,188.71x = 27,848.61 × 13,119.84
  4. Step 4: Simplify right side
    20,188.71x = 365,369,307.42
  5. Step 5: Solve for x
    x = 365,369,307.42/20,188.71
  6. Step 6: Final answer
    x = 18,097.70

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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.