Home / 28,423.80-39,195.72-18,860.34

Finding the Fourth Proportional to 28,423.80, 39,195.72 and 18,860.34

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Solution

The fourth proportional to 28,423.80, 39,195.72 and 18,860.34 is: 26,007.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.80 : 39,195.72 = 18,860.34 : x
  2. Step 2: Convert to fraction form
    28,423.80/39,195.72 = 18,860.34/x
  3. Step 3: Cross multiply
    28,423.80x = 39,195.72 × 18,860.34
  4. Step 4: Simplify right side
    28,423.80x = 739,244,605.74
  5. Step 5: Solve for x
    x = 739,244,605.74/28,423.80
  6. Step 6: Final answer
    x = 26,007.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.