Home / 28,214.75-38,936.36-15,294.07

Finding the Fourth Proportional to 28,214.75, 38,936.36 and 15,294.07

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Solution

The fourth proportional to 28,214.75, 38,936.36 and 15,294.07 is: 21,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.75 : 38,936.36 = 15,294.07 : x
  2. Step 2: Convert to fraction form
    28,214.75/38,936.36 = 15,294.07/x
  3. Step 3: Cross multiply
    28,214.75x = 38,936.36 × 15,294.07
  4. Step 4: Simplify right side
    28,214.75x = 595,495,415.39
  5. Step 5: Solve for x
    x = 595,495,415.39/28,214.75
  6. Step 6: Final answer
    x = 21,105.82

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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.