Home / 25,991.72-38,987.56-8,461.54

Finding the Fourth Proportional to 25,991.72, 38,987.56 and 8,461.54

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Solution

The fourth proportional to 25,991.72, 38,987.56 and 8,461.54 is: 12,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.72 : 38,987.56 = 8,461.54 : x
  2. Step 2: Convert to fraction form
    25,991.72/38,987.56 = 8,461.54/x
  3. Step 3: Cross multiply
    25,991.72x = 38,987.56 × 8,461.54
  4. Step 4: Simplify right side
    25,991.72x = 329,894,798.44
  5. Step 5: Solve for x
    x = 329,894,798.44/25,991.72
  6. Step 6: Final answer
    x = 12,692.30

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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.