Home / 12,511.92-18,765.72-4,720.08

Finding the Fourth Proportional to 12,511.92, 18,765.72 and 4,720.08

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Solution

The fourth proportional to 12,511.92, 18,765.72 and 4,720.08 is: 7,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.92 : 18,765.72 = 4,720.08 : x
  2. Step 2: Convert to fraction form
    12,511.92/18,765.72 = 4,720.08/x
  3. Step 3: Cross multiply
    12,511.92x = 18,765.72 × 4,720.08
  4. Step 4: Simplify right side
    12,511.92x = 88,575,699.66
  5. Step 5: Solve for x
    x = 88,575,699.66/12,511.92
  6. Step 6: Final answer
    x = 7,079.31

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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.