Home / 28,557.86-42,847.03-12,761.57

Finding the Fourth Proportional to 28,557.86, 42,847.03 and 12,761.57

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Solution

The fourth proportional to 28,557.86, 42,847.03 and 12,761.57 is: 19,146.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.86 : 42,847.03 = 12,761.57 : x
  2. Step 2: Convert to fraction form
    28,557.86/42,847.03 = 12,761.57/x
  3. Step 3: Cross multiply
    28,557.86x = 42,847.03 × 12,761.57
  4. Step 4: Simplify right side
    28,557.86x = 546,795,372.64
  5. Step 5: Solve for x
    x = 546,795,372.64/28,557.86
  6. Step 6: Final answer
    x = 19,146.93

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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.