Home / 18,490.55-25,518.74-10,939.30

Finding the Fourth Proportional to 18,490.55, 25,518.74 and 10,939.30

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Solution

The fourth proportional to 18,490.55, 25,518.74 and 10,939.30 is: 15,097.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.55 : 25,518.74 = 10,939.30 : x
  2. Step 2: Convert to fraction form
    18,490.55/25,518.74 = 10,939.30/x
  3. Step 3: Cross multiply
    18,490.55x = 25,518.74 × 10,939.30
  4. Step 4: Simplify right side
    18,490.55x = 279,157,208.30
  5. Step 5: Solve for x
    x = 279,157,208.30/18,490.55
  6. Step 6: Final answer
    x = 15,097.29

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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.