Home / 28,151.28-38,848.80-15,576

Finding the Fourth Proportional to 28,151.28, 38,848.80 and 15,576

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Solution

The fourth proportional to 28,151.28, 38,848.80 and 15,576 is: 21,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,151.28 : 38,848.80 = 15,576 : x
  2. Step 2: Convert to fraction form
    28,151.28/38,848.80 = 15,576/x
  3. Step 3: Cross multiply
    28,151.28x = 38,848.80 × 15,576
  4. Step 4: Simplify right side
    28,151.28x = 605,108,908.80
  5. Step 5: Solve for x
    x = 605,108,908.80/28,151.28
  6. Step 6: Final answer
    x = 21,494.90

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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.