Home / 13,479.18-20,221.58-5,688.06

Finding the Fourth Proportional to 13,479.18, 20,221.58 and 5,688.06

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Solution

The fourth proportional to 13,479.18, 20,221.58 and 5,688.06 is: 8,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.18 : 20,221.58 = 5,688.06 : x
  2. Step 2: Convert to fraction form
    13,479.18/20,221.58 = 5,688.06/x
  3. Step 3: Cross multiply
    13,479.18x = 20,221.58 × 5,688.06
  4. Step 4: Simplify right side
    13,479.18x = 115,021,560.33
  5. Step 5: Solve for x
    x = 115,021,560.33/13,479.18
  6. Step 6: Final answer
    x = 8,533.28

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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.