Home / 13,640.36-20,460.54-4,281.19

Finding the Fourth Proportional to 13,640.36, 20,460.54 and 4,281.19

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Solution

The fourth proportional to 13,640.36, 20,460.54 and 4,281.19 is: 6,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.36 : 20,460.54 = 4,281.19 : x
  2. Step 2: Convert to fraction form
    13,640.36/20,460.54 = 4,281.19/x
  3. Step 3: Cross multiply
    13,640.36x = 20,460.54 × 4,281.19
  4. Step 4: Simplify right side
    13,640.36x = 87,595,459.24
  5. Step 5: Solve for x
    x = 87,595,459.24/13,640.36
  6. Step 6: Final answer
    x = 6,421.79

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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.