Home / 28,171.07-42,195.20-14,106.57

Finding the Fourth Proportional to 28,171.07, 42,195.20 and 14,106.57

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Solution

The fourth proportional to 28,171.07, 42,195.20 and 14,106.57 is: 21,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.07 : 42,195.20 = 14,106.57 : x
  2. Step 2: Convert to fraction form
    28,171.07/42,195.20 = 14,106.57/x
  3. Step 3: Cross multiply
    28,171.07x = 42,195.20 × 14,106.57
  4. Step 4: Simplify right side
    28,171.07x = 595,229,313.70
  5. Step 5: Solve for x
    x = 595,229,313.70/28,171.07
  6. Step 6: Final answer
    x = 21,129.10

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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.