Home / 12,187.12-16,818.54-7,474.00

Finding the Fourth Proportional to 12,187.12, 16,818.54 and 7,474.00

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Solution

The fourth proportional to 12,187.12, 16,818.54 and 7,474.00 is: 10,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.12 : 16,818.54 = 7,474.00 : x
  2. Step 2: Convert to fraction form
    12,187.12/16,818.54 = 7,474.00/x
  3. Step 3: Cross multiply
    12,187.12x = 16,818.54 × 7,474.00
  4. Step 4: Simplify right side
    12,187.12x = 125,701,781.98
  5. Step 5: Solve for x
    x = 125,701,781.98/12,187.12
  6. Step 6: Final answer
    x = 10,314.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.