Home / 13,986.40-20,976.56-4,624.21

Finding the Fourth Proportional to 13,986.40, 20,976.56 and 4,624.21

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Solution

The fourth proportional to 13,986.40, 20,976.56 and 4,624.21 is: 6,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.40 : 20,976.56 = 4,624.21 : x
  2. Step 2: Convert to fraction form
    13,986.40/20,976.56 = 4,624.21/x
  3. Step 3: Cross multiply
    13,986.40x = 20,976.56 × 4,624.21
  4. Step 4: Simplify right side
    13,986.40x = 96,999,890.51
  5. Step 5: Solve for x
    x = 96,999,890.51/13,986.40
  6. Step 6: Final answer
    x = 6,935.30

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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.