Home / 25,905.06-38,813.85-20,700

Finding the Fourth Proportional to 25,905.06, 38,813.85 and 20,700

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Solution

The fourth proportional to 25,905.06, 38,813.85 and 20,700 is: 31,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905.06 : 38,813.85 = 20,700 : x
  2. Step 2: Convert to fraction form
    25,905.06/38,813.85 = 20,700/x
  3. Step 3: Cross multiply
    25,905.06x = 38,813.85 × 20,700
  4. Step 4: Simplify right side
    25,905.06x = 803,446,695
  5. Step 5: Solve for x
    x = 803,446,695/25,905.06
  6. Step 6: Final answer
    x = 31,015.05

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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.