Home / 13,141.48-18,128.28-7,835.44

Finding the Fourth Proportional to 13,141.48, 18,128.28 and 7,835.44

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Solution

The fourth proportional to 13,141.48, 18,128.28 and 7,835.44 is: 10,808.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.48 : 18,128.28 = 7,835.44 : x
  2. Step 2: Convert to fraction form
    13,141.48/18,128.28 = 7,835.44/x
  3. Step 3: Cross multiply
    13,141.48x = 18,128.28 × 7,835.44
  4. Step 4: Simplify right side
    13,141.48x = 142,043,050.24
  5. Step 5: Solve for x
    x = 142,043,050.24/13,141.48
  6. Step 6: Final answer
    x = 10,808.76

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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.