Home / 13,905.24-20,848.76-5,135.38

Finding the Fourth Proportional to 13,905.24, 20,848.76 and 5,135.38

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Solution

The fourth proportional to 13,905.24, 20,848.76 and 5,135.38 is: 7,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.24 : 20,848.76 = 5,135.38 : x
  2. Step 2: Convert to fraction form
    13,905.24/20,848.76 = 5,135.38/x
  3. Step 3: Cross multiply
    13,905.24x = 20,848.76 × 5,135.38
  4. Step 4: Simplify right side
    13,905.24x = 107,066,305.13
  5. Step 5: Solve for x
    x = 107,066,305.13/13,905.24
  6. Step 6: Final answer
    x = 7,699.71

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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.