Home / 14,117.84-21,162.96-6,720.28

Finding the Fourth Proportional to 14,117.84, 21,162.96 and 6,720.28

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Solution

The fourth proportional to 14,117.84, 21,162.96 and 6,720.28 is: 10,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.84 : 21,162.96 = 6,720.28 : x
  2. Step 2: Convert to fraction form
    14,117.84/21,162.96 = 6,720.28/x
  3. Step 3: Cross multiply
    14,117.84x = 21,162.96 × 6,720.28
  4. Step 4: Simplify right side
    14,117.84x = 142,221,016.83
  5. Step 5: Solve for x
    x = 142,221,016.83/14,117.84
  6. Step 6: Final answer
    x = 10,073.85

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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.