Home / 27,830.56-38,406.28-15,083.76

Finding the Fourth Proportional to 27,830.56, 38,406.28 and 15,083.76

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Solution

The fourth proportional to 27,830.56, 38,406.28 and 15,083.76 is: 20,815.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,830.56 : 38,406.28 = 15,083.76 : x
  2. Step 2: Convert to fraction form
    27,830.56/38,406.28 = 15,083.76/x
  3. Step 3: Cross multiply
    27,830.56x = 38,406.28 × 15,083.76
  4. Step 4: Simplify right side
    27,830.56x = 579,311,110.01
  5. Step 5: Solve for x
    x = 579,311,110.01/27,830.56
  6. Step 6: Final answer
    x = 20,815.65

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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.