Home / 25,221.36-34,805.15-13,890.64

Finding the Fourth Proportional to 25,221.36, 34,805.15 and 13,890.64

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Solution

The fourth proportional to 25,221.36, 34,805.15 and 13,890.64 is: 19,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221.36 : 34,805.15 = 13,890.64 : x
  2. Step 2: Convert to fraction form
    25,221.36/34,805.15 = 13,890.64/x
  3. Step 3: Cross multiply
    25,221.36x = 34,805.15 × 13,890.64
  4. Step 4: Simplify right side
    25,221.36x = 483,465,808.80
  5. Step 5: Solve for x
    x = 483,465,808.80/25,221.36
  6. Step 6: Final answer
    x = 19,168.90

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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.