Home / 12,187.80-18,283.32-5,615.46

Finding the Fourth Proportional to 12,187.80, 18,283.32 and 5,615.46

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Solution

The fourth proportional to 12,187.80, 18,283.32 and 5,615.46 is: 8,423.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.80 : 18,283.32 = 5,615.46 : x
  2. Step 2: Convert to fraction form
    12,187.80/18,283.32 = 5,615.46/x
  3. Step 3: Cross multiply
    12,187.80x = 18,283.32 × 5,615.46
  4. Step 4: Simplify right side
    12,187.80x = 102,669,252.13
  5. Step 5: Solve for x
    x = 102,669,252.13/12,187.80
  6. Step 6: Final answer
    x = 8,423.94

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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.