Home / 28,028.84-38,695.64-18,610.28

Finding the Fourth Proportional to 28,028.84, 38,695.64 and 18,610.28

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Solution

The fourth proportional to 28,028.84, 38,695.64 and 18,610.28 is: 25,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.84 : 38,695.64 = 18,610.28 : x
  2. Step 2: Convert to fraction form
    28,028.84/38,695.64 = 18,610.28/x
  3. Step 3: Cross multiply
    28,028.84x = 38,695.64 × 18,610.28
  4. Step 4: Simplify right side
    28,028.84x = 720,136,695.18
  5. Step 5: Solve for x
    x = 720,136,695.18/28,028.84
  6. Step 6: Final answer
    x = 25,692.70

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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.