Home / 30,631.52-45,885.78-13,968.62

Finding the Fourth Proportional to 30,631.52, 45,885.78 and 13,968.62

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Solution

The fourth proportional to 30,631.52, 45,885.78 and 13,968.62 is: 20,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631.52 : 45,885.78 = 13,968.62 : x
  2. Step 2: Convert to fraction form
    30,631.52/45,885.78 = 13,968.62/x
  3. Step 3: Cross multiply
    30,631.52x = 45,885.78 × 13,968.62
  4. Step 4: Simplify right side
    30,631.52x = 640,961,024.22
  5. Step 5: Solve for x
    x = 640,961,024.22/30,631.52
  6. Step 6: Final answer
    x = 20,924.88

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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.