Home / 25,391.78-38,112.30-12,253.40

Finding the Fourth Proportional to 25,391.78, 38,112.30 and 12,253.40

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Solution

The fourth proportional to 25,391.78, 38,112.30 and 12,253.40 is: 18,391.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,391.78 : 38,112.30 = 12,253.40 : x
  2. Step 2: Convert to fraction form
    25,391.78/38,112.30 = 12,253.40/x
  3. Step 3: Cross multiply
    25,391.78x = 38,112.30 × 12,253.40
  4. Step 4: Simplify right side
    25,391.78x = 467,005,256.82
  5. Step 5: Solve for x
    x = 467,005,256.82/25,391.78
  6. Step 6: Final answer
    x = 18,391.99

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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.