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Finding the Fourth Proportional to 12,511.30, 18,752.64 and 5,928.16

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Solution

The fourth proportional to 12,511.30, 18,752.64 and 5,928.16 is: 8,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.30 : 18,752.64 = 5,928.16 : x
  2. Step 2: Convert to fraction form
    12,511.30/18,752.64 = 5,928.16/x
  3. Step 3: Cross multiply
    12,511.30x = 18,752.64 × 5,928.16
  4. Step 4: Simplify right side
    12,511.30x = 111,168,650.34
  5. Step 5: Solve for x
    x = 111,168,650.34/12,511.30
  6. Step 6: Final answer
    x = 8,885.46

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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.