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Finding the Fourth Proportional to 28,848, 39,810.28 and 15,600

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Solution

The fourth proportional to 28,848, 39,810.28 and 15,600 is: 21,528.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,848 : 39,810.28 = 15,600 : x
  2. Step 2: Convert to fraction form
    28,848/39,810.28 = 15,600/x
  3. Step 3: Cross multiply
    28,848x = 39,810.28 × 15,600
  4. Step 4: Simplify right side
    28,848x = 621,040,368
  5. Step 5: Solve for x
    x = 621,040,368/28,848
  6. Step 6: Final answer
    x = 21,528.02

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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.