Home / 20,896.10-31,307.72-17,408.51

Finding the Fourth Proportional to 20,896.10, 31,307.72 and 17,408.51

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Solution

The fourth proportional to 20,896.10, 31,307.72 and 17,408.51 is: 26,082.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.10 : 31,307.72 = 17,408.51 : x
  2. Step 2: Convert to fraction form
    20,896.10/31,307.72 = 17,408.51/x
  3. Step 3: Cross multiply
    20,896.10x = 31,307.72 × 17,408.51
  4. Step 4: Simplify right side
    20,896.10x = 545,020,878.49
  5. Step 5: Solve for x
    x = 545,020,878.49/20,896.10
  6. Step 6: Final answer
    x = 26,082.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.