Home / 27,913.90-38,520.75-15,338.38

Finding the Fourth Proportional to 27,913.90, 38,520.75 and 15,338.38

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Solution

The fourth proportional to 27,913.90, 38,520.75 and 15,338.38 is: 21,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,913.90 : 38,520.75 = 15,338.38 : x
  2. Step 2: Convert to fraction form
    27,913.90/38,520.75 = 15,338.38/x
  3. Step 3: Cross multiply
    27,913.90x = 38,520.75 × 15,338.38
  4. Step 4: Simplify right side
    27,913.90x = 590,845,824.69
  5. Step 5: Solve for x
    x = 590,845,824.69/27,913.90
  6. Step 6: Final answer
    x = 21,166.72

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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.