Home / 10,077.72-13,857.84-8,749.04

Finding the Fourth Proportional to 10,077.72, 13,857.84 and 8,749.04

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Solution

The fourth proportional to 10,077.72, 13,857.84 and 8,749.04 is: 12,030.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.72 : 13,857.84 = 8,749.04 : x
  2. Step 2: Convert to fraction form
    10,077.72/13,857.84 = 8,749.04/x
  3. Step 3: Cross multiply
    10,077.72x = 13,857.84 × 8,749.04
  4. Step 4: Simplify right side
    10,077.72x = 121,242,796.47
  5. Step 5: Solve for x
    x = 121,242,796.47/10,077.72
  6. Step 6: Final answer
    x = 12,030.78

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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.