Home / 19,984.76-27,580.20-11,489.60

Finding the Fourth Proportional to 19,984.76, 27,580.20 and 11,489.60

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Solution

The fourth proportional to 19,984.76, 27,580.20 and 11,489.60 is: 15,856.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,984.76 : 27,580.20 = 11,489.60 : x
  2. Step 2: Convert to fraction form
    19,984.76/27,580.20 = 11,489.60/x
  3. Step 3: Cross multiply
    19,984.76x = 27,580.20 × 11,489.60
  4. Step 4: Simplify right side
    19,984.76x = 316,885,465.92
  5. Step 5: Solve for x
    x = 316,885,465.92/19,984.76
  6. Step 6: Final answer
    x = 15,856.36

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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.