Home / 28,571.66-42,885.13-13,790.98

Finding the Fourth Proportional to 28,571.66, 42,885.13 and 13,790.98

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Solution

The fourth proportional to 28,571.66, 42,885.13 and 13,790.98 is: 20,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.66 : 42,885.13 = 13,790.98 : x
  2. Step 2: Convert to fraction form
    28,571.66/42,885.13 = 13,790.98/x
  3. Step 3: Cross multiply
    28,571.66x = 42,885.13 × 13,790.98
  4. Step 4: Simplify right side
    28,571.66x = 591,427,970.13
  5. Step 5: Solve for x
    x = 591,427,970.13/28,571.66
  6. Step 6: Final answer
    x = 20,699.81

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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.