Home / 28,186.70-42,222.61-13,350.64

Finding the Fourth Proportional to 28,186.70, 42,222.61 and 13,350.64

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Solution

The fourth proportional to 28,186.70, 42,222.61 and 13,350.64 is: 19,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.70 : 42,222.61 = 13,350.64 : x
  2. Step 2: Convert to fraction form
    28,186.70/42,222.61 = 13,350.64/x
  3. Step 3: Cross multiply
    28,186.70x = 42,222.61 × 13,350.64
  4. Step 4: Simplify right side
    28,186.70x = 563,698,727.04
  5. Step 5: Solve for x
    x = 563,698,727.04/28,186.70
  6. Step 6: Final answer
    x = 19,998.75

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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.