Home / 12,587.20-18,883.68-7,037.80

Finding the Fourth Proportional to 12,587.20, 18,883.68 and 7,037.80

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Solution

The fourth proportional to 12,587.20, 18,883.68 and 7,037.80 is: 10,558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.20 : 18,883.68 = 7,037.80 : x
  2. Step 2: Convert to fraction form
    12,587.20/18,883.68 = 7,037.80/x
  3. Step 3: Cross multiply
    12,587.20x = 18,883.68 × 7,037.80
  4. Step 4: Simplify right side
    12,587.20x = 132,899,563.10
  5. Step 5: Solve for x
    x = 132,899,563.10/12,587.20
  6. Step 6: Final answer
    x = 10,558.31

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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.