Home / 12,645.60-18,970.48-5,628.04

Finding the Fourth Proportional to 12,645.60, 18,970.48 and 5,628.04

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Solution

The fourth proportional to 12,645.60, 18,970.48 and 5,628.04 is: 8,442.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.60 : 18,970.48 = 5,628.04 : x
  2. Step 2: Convert to fraction form
    12,645.60/18,970.48 = 5,628.04/x
  3. Step 3: Cross multiply
    12,645.60x = 18,970.48 × 5,628.04
  4. Step 4: Simplify right side
    12,645.60x = 106,766,620.26
  5. Step 5: Solve for x
    x = 106,766,620.26/12,645.60
  6. Step 6: Final answer
    x = 8,442.99

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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.