Home / 25,420.08-38,126.88-7,890.12

Finding the Fourth Proportional to 25,420.08, 38,126.88 and 7,890.12

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Solution

The fourth proportional to 25,420.08, 38,126.88 and 7,890.12 is: 11,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,420.08 : 38,126.88 = 7,890.12 : x
  2. Step 2: Convert to fraction form
    25,420.08/38,126.88 = 7,890.12/x
  3. Step 3: Cross multiply
    25,420.08x = 38,126.88 × 7,890.12
  4. Step 4: Simplify right side
    25,420.08x = 300,825,658.43
  5. Step 5: Solve for x
    x = 300,825,658.43/25,420.08
  6. Step 6: Final answer
    x = 11,834.17

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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.