Home / 18,939.56-26,134.79-10,980.92

Finding the Fourth Proportional to 18,939.56, 26,134.79 and 10,980.92

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Solution

The fourth proportional to 18,939.56, 26,134.79 and 10,980.92 is: 15,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.56 : 26,134.79 = 10,980.92 : x
  2. Step 2: Convert to fraction form
    18,939.56/26,134.79 = 10,980.92/x
  3. Step 3: Cross multiply
    18,939.56x = 26,134.79 × 10,980.92
  4. Step 4: Simplify right side
    18,939.56x = 286,984,048.64
  5. Step 5: Solve for x
    x = 286,984,048.64/18,939.56
  6. Step 6: Final answer
    x = 15,152.63

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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.