Home / 12,128.60-18,195.36-4,337.24

Finding the Fourth Proportional to 12,128.60, 18,195.36 and 4,337.24

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Solution

The fourth proportional to 12,128.60, 18,195.36 and 4,337.24 is: 6,506.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.60 : 18,195.36 = 4,337.24 : x
  2. Step 2: Convert to fraction form
    12,128.60/18,195.36 = 4,337.24/x
  3. Step 3: Cross multiply
    12,128.60x = 18,195.36 × 4,337.24
  4. Step 4: Simplify right side
    12,128.60x = 78,917,643.21
  5. Step 5: Solve for x
    x = 78,917,643.21/12,128.60
  6. Step 6: Final answer
    x = 6,506.74

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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.