Home / 18,765.45-28,148.16-8,899.35

Finding the Fourth Proportional to 18,765.45, 28,148.16 and 8,899.35

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Solution

The fourth proportional to 18,765.45, 28,148.16 and 8,899.35 is: 13,349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.45 : 28,148.16 = 8,899.35 : x
  2. Step 2: Convert to fraction form
    18,765.45/28,148.16 = 8,899.35/x
  3. Step 3: Cross multiply
    18,765.45x = 28,148.16 × 8,899.35
  4. Step 4: Simplify right side
    18,765.45x = 250,500,327.70
  5. Step 5: Solve for x
    x = 250,500,327.70/18,765.45
  6. Step 6: Final answer
    x = 13,349.02

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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.