Home / 25,605.28-38,395.68-13,131.28

Finding the Fourth Proportional to 25,605.28, 38,395.68 and 13,131.28

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Solution

The fourth proportional to 25,605.28, 38,395.68 and 13,131.28 is: 19,690.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,605.28 : 38,395.68 = 13,131.28 : x
  2. Step 2: Convert to fraction form
    25,605.28/38,395.68 = 13,131.28/x
  3. Step 3: Cross multiply
    25,605.28x = 38,395.68 × 13,131.28
  4. Step 4: Simplify right side
    25,605.28x = 504,184,424.87
  5. Step 5: Solve for x
    x = 504,184,424.87/25,605.28
  6. Step 6: Final answer
    x = 19,690.64

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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.