Home / 18,953.72-26,158.38-10,890.26

Finding the Fourth Proportional to 18,953.72, 26,158.38 and 10,890.26

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Solution

The fourth proportional to 18,953.72, 26,158.38 and 10,890.26 is: 15,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.72 : 26,158.38 = 10,890.26 : x
  2. Step 2: Convert to fraction form
    18,953.72/26,158.38 = 10,890.26/x
  3. Step 3: Cross multiply
    18,953.72x = 26,158.38 × 10,890.26
  4. Step 4: Simplify right side
    18,953.72x = 284,871,559.38
  5. Step 5: Solve for x
    x = 284,871,559.38/18,953.72
  6. Step 6: Final answer
    x = 15,029.85

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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.