Home / 28,473.46-42,679.84-21,431.69

Finding the Fourth Proportional to 28,473.46, 42,679.84 and 21,431.69

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Solution

The fourth proportional to 28,473.46, 42,679.84 and 21,431.69 is: 32,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.46 : 42,679.84 = 21,431.69 : x
  2. Step 2: Convert to fraction form
    28,473.46/42,679.84 = 21,431.69/x
  3. Step 3: Cross multiply
    28,473.46x = 42,679.84 × 21,431.69
  4. Step 4: Simplify right side
    28,473.46x = 914,701,100.13
  5. Step 5: Solve for x
    x = 914,701,100.13/28,473.46
  6. Step 6: Final answer
    x = 32,124.69

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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.