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Finding the Fourth Proportional to 25,953.30, 38,945.79 and 20,007.09

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Solution

The fourth proportional to 25,953.30, 38,945.79 and 20,007.09 is: 30,022.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,953.30 : 38,945.79 = 20,007.09 : x
  2. Step 2: Convert to fraction form
    25,953.30/38,945.79 = 20,007.09/x
  3. Step 3: Cross multiply
    25,953.30x = 38,945.79 × 20,007.09
  4. Step 4: Simplify right side
    25,953.30x = 779,191,925.65
  5. Step 5: Solve for x
    x = 779,191,925.65/25,953.30
  6. Step 6: Final answer
    x = 30,022.85

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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.