Home / 28,980.20-43,499.10-14,205.80

Finding the Fourth Proportional to 28,980.20, 43,499.10 and 14,205.80

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Solution

The fourth proportional to 28,980.20, 43,499.10 and 14,205.80 is: 21,322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.20 : 43,499.10 = 14,205.80 : x
  2. Step 2: Convert to fraction form
    28,980.20/43,499.10 = 14,205.80/x
  3. Step 3: Cross multiply
    28,980.20x = 43,499.10 × 14,205.80
  4. Step 4: Simplify right side
    28,980.20x = 617,939,514.78
  5. Step 5: Solve for x
    x = 617,939,514.78/28,980.20
  6. Step 6: Final answer
    x = 21,322.82

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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.