Home / 25,805.40-38,795.58-20,606.82

Finding the Fourth Proportional to 25,805.40, 38,795.58 and 20,606.82

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Solution

The fourth proportional to 25,805.40, 38,795.58 and 20,606.82 is: 30,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,805.40 : 38,795.58 = 20,606.82 : x
  2. Step 2: Convert to fraction form
    25,805.40/38,795.58 = 20,606.82/x
  3. Step 3: Cross multiply
    25,805.40x = 38,795.58 × 20,606.82
  4. Step 4: Simplify right side
    25,805.40x = 799,453,533.86
  5. Step 5: Solve for x
    x = 799,453,533.86/25,805.40
  6. Step 6: Final answer
    x = 30,980.09

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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.