Home / 28,854.12-43,237.40-21,423.80

Finding the Fourth Proportional to 28,854.12, 43,237.40 and 21,423.80

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Solution

The fourth proportional to 28,854.12, 43,237.40 and 21,423.80 is: 32,103.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.12 : 43,237.40 = 21,423.80 : x
  2. Step 2: Convert to fraction form
    28,854.12/43,237.40 = 21,423.80/x
  3. Step 3: Cross multiply
    28,854.12x = 43,237.40 × 21,423.80
  4. Step 4: Simplify right side
    28,854.12x = 926,309,410.12
  5. Step 5: Solve for x
    x = 926,309,410.12/28,854.12
  6. Step 6: Final answer
    x = 32,103.19

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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.