Home / 18,939.72-26,142.30-10,983.72

Finding the Fourth Proportional to 18,939.72, 26,142.30 and 10,983.72

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Solution

The fourth proportional to 18,939.72, 26,142.30 and 10,983.72 is: 15,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.72 : 26,142.30 = 10,983.72 : x
  2. Step 2: Convert to fraction form
    18,939.72/26,142.30 = 10,983.72/x
  3. Step 3: Cross multiply
    18,939.72x = 26,142.30 × 10,983.72
  4. Step 4: Simplify right side
    18,939.72x = 287,139,703.36
  5. Step 5: Solve for x
    x = 287,139,703.36/18,939.72
  6. Step 6: Final answer
    x = 15,160.72

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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.