Home / 11,479.21-17,202.65-9,128.77

Finding the Fourth Proportional to 11,479.21, 17,202.65 and 9,128.77

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Solution

The fourth proportional to 11,479.21, 17,202.65 and 9,128.77 is: 13,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.21 : 17,202.65 = 9,128.77 : x
  2. Step 2: Convert to fraction form
    11,479.21/17,202.65 = 9,128.77/x
  3. Step 3: Cross multiply
    11,479.21x = 17,202.65 × 9,128.77
  4. Step 4: Simplify right side
    11,479.21x = 157,038,946.59
  5. Step 5: Solve for x
    x = 157,038,946.59/11,479.21
  6. Step 6: Final answer
    x = 13,680.30

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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.