Home / 27,730.89-38,269.13-15,155.37

Finding the Fourth Proportional to 27,730.89, 38,269.13 and 15,155.37

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Solution

The fourth proportional to 27,730.89, 38,269.13 and 15,155.37 is: 20,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,730.89 : 38,269.13 = 15,155.37 : x
  2. Step 2: Convert to fraction form
    27,730.89/38,269.13 = 15,155.37/x
  3. Step 3: Cross multiply
    27,730.89x = 38,269.13 × 15,155.37
  4. Step 4: Simplify right side
    27,730.89x = 579,982,748.95
  5. Step 5: Solve for x
    x = 579,982,748.95/27,730.89
  6. Step 6: Final answer
    x = 20,914.68

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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.