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Finding the Fourth Proportional to 27,903, 38,506.20 and 15,156.24

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Solution

The fourth proportional to 27,903, 38,506.20 and 15,156.24 is: 20,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,903 : 38,506.20 = 15,156.24 : x
  2. Step 2: Convert to fraction form
    27,903/38,506.20 = 15,156.24/x
  3. Step 3: Cross multiply
    27,903x = 38,506.20 × 15,156.24
  4. Step 4: Simplify right side
    27,903x = 583,609,208.69
  5. Step 5: Solve for x
    x = 583,609,208.69/27,903
  6. Step 6: Final answer
    x = 20,915.64

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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.