Home / 15,157.42-20,917.60-8,443.50

Finding the Fourth Proportional to 15,157.42, 20,917.60 and 8,443.50

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Solution

The fourth proportional to 15,157.42, 20,917.60 and 8,443.50 is: 11,652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.42 : 20,917.60 = 8,443.50 : x
  2. Step 2: Convert to fraction form
    15,157.42/20,917.60 = 8,443.50/x
  3. Step 3: Cross multiply
    15,157.42x = 20,917.60 × 8,443.50
  4. Step 4: Simplify right side
    15,157.42x = 176,617,755.60
  5. Step 5: Solve for x
    x = 176,617,755.60/15,157.42
  6. Step 6: Final answer
    x = 11,652.23

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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.