Home / 12,483.90-17,228.52-7,179.30

Finding the Fourth Proportional to 12,483.90, 17,228.52 and 7,179.30

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Solution

The fourth proportional to 12,483.90, 17,228.52 and 7,179.30 is: 9,907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.90 : 17,228.52 = 7,179.30 : x
  2. Step 2: Convert to fraction form
    12,483.90/17,228.52 = 7,179.30/x
  3. Step 3: Cross multiply
    12,483.90x = 17,228.52 × 7,179.30
  4. Step 4: Simplify right side
    12,483.90x = 123,688,713.64
  5. Step 5: Solve for x
    x = 123,688,713.64/12,483.90
  6. Step 6: Final answer
    x = 9,907.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.