Home / 28,178.25-38,885.99-15,603

Finding the Fourth Proportional to 28,178.25, 38,885.99 and 15,603

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Solution

The fourth proportional to 28,178.25, 38,885.99 and 15,603 is: 21,532.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.25 : 38,885.99 = 15,603 : x
  2. Step 2: Convert to fraction form
    28,178.25/38,885.99 = 15,603/x
  3. Step 3: Cross multiply
    28,178.25x = 38,885.99 × 15,603
  4. Step 4: Simplify right side
    28,178.25x = 606,738,101.97
  5. Step 5: Solve for x
    x = 606,738,101.97/28,178.25
  6. Step 6: Final answer
    x = 21,532.14

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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.