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Finding the Fourth Proportional to 30,364.32, 45,515.28 and 11,639.28

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Solution

The fourth proportional to 30,364.32, 45,515.28 and 11,639.28 is: 17,446.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,364.32 : 45,515.28 = 11,639.28 : x
  2. Step 2: Convert to fraction form
    30,364.32/45,515.28 = 11,639.28/x
  3. Step 3: Cross multiply
    30,364.32x = 45,515.28 × 11,639.28
  4. Step 4: Simplify right side
    30,364.32x = 529,765,088.20
  5. Step 5: Solve for x
    x = 529,765,088.20/30,364.32
  6. Step 6: Final answer
    x = 17,446.96

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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.