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Finding the Fourth Proportional to 28,026.48, 42,039.72 and 9,558

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Solution

The fourth proportional to 28,026.48, 42,039.72 and 9,558 is: 14,337

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,026.48 : 42,039.72 = 9,558 : x
  2. Step 2: Convert to fraction form
    28,026.48/42,039.72 = 9,558/x
  3. Step 3: Cross multiply
    28,026.48x = 42,039.72 × 9,558
  4. Step 4: Simplify right side
    28,026.48x = 401,815,643.76
  5. Step 5: Solve for x
    x = 401,815,643.76/28,026.48
  6. Step 6: Final answer
    x = 14,337

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.