Home / 28,306.80-42,450.47-10,781.64

Finding the Fourth Proportional to 28,306.80, 42,450.47 and 10,781.64

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Solution

The fourth proportional to 28,306.80, 42,450.47 and 10,781.64 is: 16,168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.80 : 42,450.47 = 10,781.64 : x
  2. Step 2: Convert to fraction form
    28,306.80/42,450.47 = 10,781.64/x
  3. Step 3: Cross multiply
    28,306.80x = 42,450.47 × 10,781.64
  4. Step 4: Simplify right side
    28,306.80x = 457,685,473.12
  5. Step 5: Solve for x
    x = 457,685,473.12/28,306.80
  6. Step 6: Final answer
    x = 16,168.75

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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.