Home / 27,920.79-38,530.82-15,346.35

Finding the Fourth Proportional to 27,920.79, 38,530.82 and 15,346.35

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Solution

The fourth proportional to 27,920.79, 38,530.82 and 15,346.35 is: 21,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,920.79 : 38,530.82 = 15,346.35 : x
  2. Step 2: Convert to fraction form
    27,920.79/38,530.82 = 15,346.35/x
  3. Step 3: Cross multiply
    27,920.79x = 38,530.82 × 15,346.35
  4. Step 4: Simplify right side
    27,920.79x = 591,307,372.78
  5. Step 5: Solve for x
    x = 591,307,372.78/27,920.79
  6. Step 6: Final answer
    x = 21,178.03

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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.