Home / 25,814.20-38,663.70-21,206.20

Finding the Fourth Proportional to 25,814.20, 38,663.70 and 21,206.20

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Solution

The fourth proportional to 25,814.20, 38,663.70 and 21,206.20 is: 31,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,814.20 : 38,663.70 = 21,206.20 : x
  2. Step 2: Convert to fraction form
    25,814.20/38,663.70 = 21,206.20/x
  3. Step 3: Cross multiply
    25,814.20x = 38,663.70 × 21,206.20
  4. Step 4: Simplify right side
    25,814.20x = 819,910,154.94
  5. Step 5: Solve for x
    x = 819,910,154.94/25,814.20
  6. Step 6: Final answer
    x = 31,761.98

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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.