Home / 25,927.38-38,881.35-11,128.68

Finding the Fourth Proportional to 25,927.38, 38,881.35 and 11,128.68

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Solution

The fourth proportional to 25,927.38, 38,881.35 and 11,128.68 is: 16,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,927.38 : 38,881.35 = 11,128.68 : x
  2. Step 2: Convert to fraction form
    25,927.38/38,881.35 = 11,128.68/x
  3. Step 3: Cross multiply
    25,927.38x = 38,881.35 × 11,128.68
  4. Step 4: Simplify right side
    25,927.38x = 432,698,102.12
  5. Step 5: Solve for x
    x = 432,698,102.12/25,927.38
  6. Step 6: Final answer
    x = 16,688.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.