Home / 18,495.78-25,520.93-10,939.35

Finding the Fourth Proportional to 18,495.78, 25,520.93 and 10,939.35

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Solution

The fourth proportional to 18,495.78, 25,520.93 and 10,939.35 is: 15,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.78 : 25,520.93 = 10,939.35 : x
  2. Step 2: Convert to fraction form
    18,495.78/25,520.93 = 10,939.35/x
  3. Step 3: Cross multiply
    18,495.78x = 25,520.93 × 10,939.35
  4. Step 4: Simplify right side
    18,495.78x = 279,182,330.90
  5. Step 5: Solve for x
    x = 279,182,330.90/18,495.78
  6. Step 6: Final answer
    x = 15,094.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.