Home / 27,638.84-38,141.64-15,063.68

Finding the Fourth Proportional to 27,638.84, 38,141.64 and 15,063.68

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Solution

The fourth proportional to 27,638.84, 38,141.64 and 15,063.68 is: 20,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,638.84 : 38,141.64 = 15,063.68 : x
  2. Step 2: Convert to fraction form
    27,638.84/38,141.64 = 15,063.68/x
  3. Step 3: Cross multiply
    27,638.84x = 38,141.64 × 15,063.68
  4. Step 4: Simplify right side
    27,638.84x = 574,553,459.64
  5. Step 5: Solve for x
    x = 574,553,459.64/27,638.84
  6. Step 6: Final answer
    x = 20,787.90

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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.