Home / 28,116.22-42,185.98-12,313.08

Finding the Fourth Proportional to 28,116.22, 42,185.98 and 12,313.08

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Solution

The fourth proportional to 28,116.22, 42,185.98 and 12,313.08 is: 18,474.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.22 : 42,185.98 = 12,313.08 : x
  2. Step 2: Convert to fraction form
    28,116.22/42,185.98 = 12,313.08/x
  3. Step 3: Cross multiply
    28,116.22x = 42,185.98 × 12,313.08
  4. Step 4: Simplify right side
    28,116.22x = 519,439,135.69
  5. Step 5: Solve for x
    x = 519,439,135.69/28,116.22
  6. Step 6: Final answer
    x = 18,474.72

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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.