Home / 18,675.06-28,012.47-7,581.63

Finding the Fourth Proportional to 18,675.06, 28,012.47 and 7,581.63

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Solution

The fourth proportional to 18,675.06, 28,012.47 and 7,581.63 is: 11,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.06 : 28,012.47 = 7,581.63 : x
  2. Step 2: Convert to fraction form
    18,675.06/28,012.47 = 7,581.63/x
  3. Step 3: Cross multiply
    18,675.06x = 28,012.47 × 7,581.63
  4. Step 4: Simplify right side
    18,675.06x = 212,380,259.54
  5. Step 5: Solve for x
    x = 212,380,259.54/18,675.06
  6. Step 6: Final answer
    x = 11,372.40

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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.