Home / 28,780.15-43,176.06-12,140.24

Finding the Fourth Proportional to 28,780.15, 43,176.06 and 12,140.24

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Solution

The fourth proportional to 28,780.15, 43,176.06 and 12,140.24 is: 18,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.15 : 43,176.06 = 12,140.24 : x
  2. Step 2: Convert to fraction form
    28,780.15/43,176.06 = 12,140.24/x
  3. Step 3: Cross multiply
    28,780.15x = 43,176.06 × 12,140.24
  4. Step 4: Simplify right side
    28,780.15x = 524,167,514.77
  5. Step 5: Solve for x
    x = 524,167,514.77/28,780.15
  6. Step 6: Final answer
    x = 18,212.81

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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.