Home / 19,914.49-27,478.79-11,415.05

Finding the Fourth Proportional to 19,914.49, 27,478.79 and 11,415.05

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Solution

The fourth proportional to 19,914.49, 27,478.79 and 11,415.05 is: 15,750.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,914.49 : 27,478.79 = 11,415.05 : x
  2. Step 2: Convert to fraction form
    19,914.49/27,478.79 = 11,415.05/x
  3. Step 3: Cross multiply
    19,914.49x = 27,478.79 × 11,415.05
  4. Step 4: Simplify right side
    19,914.49x = 313,671,737.44
  5. Step 5: Solve for x
    x = 313,671,737.44/19,914.49
  6. Step 6: Final answer
    x = 15,750.93

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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.