Home / 28,185.84-42,283.62-12,604.68

Finding the Fourth Proportional to 28,185.84, 42,283.62 and 12,604.68

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Solution

The fourth proportional to 28,185.84, 42,283.62 and 12,604.68 is: 18,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.84 : 42,283.62 = 12,604.68 : x
  2. Step 2: Convert to fraction form
    28,185.84/42,283.62 = 12,604.68/x
  3. Step 3: Cross multiply
    28,185.84x = 42,283.62 × 12,604.68
  4. Step 4: Simplify right side
    28,185.84x = 532,971,499.34
  5. Step 5: Solve for x
    x = 532,971,499.34/28,185.84
  6. Step 6: Final answer
    x = 18,909.19

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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.