Home / 13,921.36-20,886.72-4,687.36

Finding the Fourth Proportional to 13,921.36, 20,886.72 and 4,687.36

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Solution

The fourth proportional to 13,921.36, 20,886.72 and 4,687.36 is: 7,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.36 : 20,886.72 = 4,687.36 : x
  2. Step 2: Convert to fraction form
    13,921.36/20,886.72 = 4,687.36/x
  3. Step 3: Cross multiply
    13,921.36x = 20,886.72 × 4,687.36
  4. Step 4: Simplify right side
    13,921.36x = 97,903,575.86
  5. Step 5: Solve for x
    x = 97,903,575.86/13,921.36
  6. Step 6: Final answer
    x = 7,032.62

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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.