Home / 27,920.90-38,530.41-15,345.38

Finding the Fourth Proportional to 27,920.90, 38,530.41 and 15,345.38

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Solution

The fourth proportional to 27,920.90, 38,530.41 and 15,345.38 is: 21,176.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.90 : 38,530.41 = 15,345.38 : x
  2. Step 2: Convert to fraction form
    27,920.90/38,530.41 = 15,345.38/x
  3. Step 3: Cross multiply
    27,920.90x = 38,530.41 × 15,345.38
  4. Step 4: Simplify right side
    27,920.90x = 591,263,783.01
  5. Step 5: Solve for x
    x = 591,263,783.01/27,920.90
  6. Step 6: Final answer
    x = 21,176.39

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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.