Home / 13,479.60-20,218.36-5,580.08

Finding the Fourth Proportional to 13,479.60, 20,218.36 and 5,580.08

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Solution

The fourth proportional to 13,479.60, 20,218.36 and 5,580.08 is: 8,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.60 : 20,218.36 = 5,580.08 : x
  2. Step 2: Convert to fraction form
    13,479.60/20,218.36 = 5,580.08/x
  3. Step 3: Cross multiply
    13,479.60x = 20,218.36 × 5,580.08
  4. Step 4: Simplify right side
    13,479.60x = 112,820,066.27
  5. Step 5: Solve for x
    x = 112,820,066.27/13,479.60
  6. Step 6: Final answer
    x = 8,369.69

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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.