Home / 28,820.13-43,242.90-12,191.64

Finding the Fourth Proportional to 28,820.13, 43,242.90 and 12,191.64

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Solution

The fourth proportional to 28,820.13, 43,242.90 and 12,191.64 is: 18,292.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.13 : 43,242.90 = 12,191.64 : x
  2. Step 2: Convert to fraction form
    28,820.13/43,242.90 = 12,191.64/x
  3. Step 3: Cross multiply
    28,820.13x = 43,242.90 × 12,191.64
  4. Step 4: Simplify right side
    28,820.13x = 527,201,869.36
  5. Step 5: Solve for x
    x = 527,201,869.36/28,820.13
  6. Step 6: Final answer
    x = 18,292.83

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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.