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Finding the Fourth Proportional to 28,201.48, 42,309.90 and 9,736.20

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Solution

The fourth proportional to 28,201.48, 42,309.90 and 9,736.20 is: 14,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.48 : 42,309.90 = 9,736.20 : x
  2. Step 2: Convert to fraction form
    28,201.48/42,309.90 = 9,736.20/x
  3. Step 3: Cross multiply
    28,201.48x = 42,309.90 × 9,736.20
  4. Step 4: Simplify right side
    28,201.48x = 411,937,648.38
  5. Step 5: Solve for x
    x = 411,937,648.38/28,201.48
  6. Step 6: Final answer
    x = 14,606.95

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1.5x scale

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.