Home / 15,554.18-21,456.96-9,879.67

Finding the Fourth Proportional to 15,554.18, 21,456.96 and 9,879.67

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Solution

The fourth proportional to 15,554.18, 21,456.96 and 9,879.67 is: 13,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.18 : 21,456.96 = 9,879.67 : x
  2. Step 2: Convert to fraction form
    15,554.18/21,456.96 = 9,879.67/x
  3. Step 3: Cross multiply
    15,554.18x = 21,456.96 × 9,879.67
  4. Step 4: Simplify right side
    15,554.18x = 211,987,684.00
  5. Step 5: Solve for x
    x = 211,987,684.00/15,554.18
  6. Step 6: Final answer
    x = 13,628.98

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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.