Home / 28,558.62-39,412.71-15,987.42

Finding the Fourth Proportional to 28,558.62, 39,412.71 and 15,987.42

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Solution

The fourth proportional to 28,558.62, 39,412.71 and 15,987.42 is: 22,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.62 : 39,412.71 = 15,987.42 : x
  2. Step 2: Convert to fraction form
    28,558.62/39,412.71 = 15,987.42/x
  3. Step 3: Cross multiply
    28,558.62x = 39,412.71 × 15,987.42
  4. Step 4: Simplify right side
    28,558.62x = 630,107,548.11
  5. Step 5: Solve for x
    x = 630,107,548.11/28,558.62
  6. Step 6: Final answer
    x = 22,063.66

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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.