Home / 15,109.63-20,850.28-8,735.74

Finding the Fourth Proportional to 15,109.63, 20,850.28 and 8,735.74

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Solution

The fourth proportional to 15,109.63, 20,850.28 and 8,735.74 is: 12,054.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.63 : 20,850.28 = 8,735.74 : x
  2. Step 2: Convert to fraction form
    15,109.63/20,850.28 = 8,735.74/x
  3. Step 3: Cross multiply
    15,109.63x = 20,850.28 × 8,735.74
  4. Step 4: Simplify right side
    15,109.63x = 182,142,551.04
  5. Step 5: Solve for x
    x = 182,142,551.04/15,109.63
  6. Step 6: Final answer
    x = 12,054.73

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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.