Home / 15,409.79-21,228.60-14,659.39

Finding the Fourth Proportional to 15,409.79, 21,228.60 and 14,659.39

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Solution

The fourth proportional to 15,409.79, 21,228.60 and 14,659.39 is: 20,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.79 : 21,228.60 = 14,659.39 : x
  2. Step 2: Convert to fraction form
    15,409.79/21,228.60 = 14,659.39/x
  3. Step 3: Cross multiply
    15,409.79x = 21,228.60 × 14,659.39
  4. Step 4: Simplify right side
    15,409.79x = 311,198,273.48
  5. Step 5: Solve for x
    x = 311,198,273.48/15,409.79
  6. Step 6: Final answer
    x = 20,194.85

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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.