Home / 28,368.62-42,557.55-8,380.14

Finding the Fourth Proportional to 28,368.62, 42,557.55 and 8,380.14

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Solution

The fourth proportional to 28,368.62, 42,557.55 and 8,380.14 is: 12,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.62 : 42,557.55 = 8,380.14 : x
  2. Step 2: Convert to fraction form
    28,368.62/42,557.55 = 8,380.14/x
  3. Step 3: Cross multiply
    28,368.62x = 42,557.55 × 8,380.14
  4. Step 4: Simplify right side
    28,368.62x = 356,638,227.06
  5. Step 5: Solve for x
    x = 356,638,227.06/28,368.62
  6. Step 6: Final answer
    x = 12,571.57

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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.