Home / 15,165.89-20,931.67-8,796.56

Finding the Fourth Proportional to 15,165.89, 20,931.67 and 8,796.56

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Solution

The fourth proportional to 15,165.89, 20,931.67 and 8,796.56 is: 12,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.89 : 20,931.67 = 8,796.56 : x
  2. Step 2: Convert to fraction form
    15,165.89/20,931.67 = 8,796.56/x
  3. Step 3: Cross multiply
    15,165.89x = 20,931.67 × 8,796.56
  4. Step 4: Simplify right side
    15,165.89x = 184,126,597.39
  5. Step 5: Solve for x
    x = 184,126,597.39/15,165.89
  6. Step 6: Final answer
    x = 12,140.84

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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.