Home / 28,172.64-42,265.98-8,451.57

Finding the Fourth Proportional to 28,172.64, 42,265.98 and 8,451.57

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Solution

The fourth proportional to 28,172.64, 42,265.98 and 8,451.57 is: 12,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.64 : 42,265.98 = 8,451.57 : x
  2. Step 2: Convert to fraction form
    28,172.64/42,265.98 = 8,451.57/x
  3. Step 3: Cross multiply
    28,172.64x = 42,265.98 × 8,451.57
  4. Step 4: Simplify right side
    28,172.64x = 357,213,888.59
  5. Step 5: Solve for x
    x = 357,213,888.59/28,172.64
  6. Step 6: Final answer
    x = 12,679.46

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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.