Home / 28,102.93-42,175.15-13,311.84

Finding the Fourth Proportional to 28,102.93, 42,175.15 and 13,311.84

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Solution

The fourth proportional to 28,102.93, 42,175.15 and 13,311.84 is: 19,977.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.93 : 42,175.15 = 13,311.84 : x
  2. Step 2: Convert to fraction form
    28,102.93/42,175.15 = 13,311.84/x
  3. Step 3: Cross multiply
    28,102.93x = 42,175.15 × 13,311.84
  4. Step 4: Simplify right side
    28,102.93x = 561,428,848.78
  5. Step 5: Solve for x
    x = 561,428,848.78/28,102.93
  6. Step 6: Final answer
    x = 19,977.59

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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.