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Finding the Fourth Proportional to 30,457.28, 45,662.88 and 15,659.84

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Solution

The fourth proportional to 30,457.28, 45,662.88 and 15,659.84 is: 23,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457.28 : 45,662.88 = 15,659.84 : x
  2. Step 2: Convert to fraction form
    30,457.28/45,662.88 = 15,659.84/x
  3. Step 3: Cross multiply
    30,457.28x = 45,662.88 × 15,659.84
  4. Step 4: Simplify right side
    30,457.28x = 715,073,394.74
  5. Step 5: Solve for x
    x = 715,073,394.74/30,457.28
  6. Step 6: Final answer
    x = 23,477.91

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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.