Home / 25,636.70-38,385.57-13,298.78

Finding the Fourth Proportional to 25,636.70, 38,385.57 and 13,298.78

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Solution

The fourth proportional to 25,636.70, 38,385.57 and 13,298.78 is: 19,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,636.70 : 38,385.57 = 13,298.78 : x
  2. Step 2: Convert to fraction form
    25,636.70/38,385.57 = 13,298.78/x
  3. Step 3: Cross multiply
    25,636.70x = 38,385.57 × 13,298.78
  4. Step 4: Simplify right side
    25,636.70x = 510,481,250.60
  5. Step 5: Solve for x
    x = 510,481,250.60/25,636.70
  6. Step 6: Final answer
    x = 19,912.13

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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.