Home / 14,415.18-19,896.75-9,939.66

Finding the Fourth Proportional to 14,415.18, 19,896.75 and 9,939.66

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Solution

The fourth proportional to 14,415.18, 19,896.75 and 9,939.66 is: 13,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,415.18 : 19,896.75 = 9,939.66 : x
  2. Step 2: Convert to fraction form
    14,415.18/19,896.75 = 9,939.66/x
  3. Step 3: Cross multiply
    14,415.18x = 19,896.75 × 9,939.66
  4. Step 4: Simplify right side
    14,415.18x = 197,766,930.11
  5. Step 5: Solve for x
    x = 197,766,930.11/14,415.18
  6. Step 6: Final answer
    x = 13,719.35

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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.