Home / 14,628.40-21,917.40-6,821.20

Finding the Fourth Proportional to 14,628.40, 21,917.40 and 6,821.20

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Solution

The fourth proportional to 14,628.40, 21,917.40 and 6,821.20 is: 10,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,628.40 : 21,917.40 = 6,821.20 : x
  2. Step 2: Convert to fraction form
    14,628.40/21,917.40 = 6,821.20/x
  3. Step 3: Cross multiply
    14,628.40x = 21,917.40 × 6,821.20
  4. Step 4: Simplify right side
    14,628.40x = 149,502,968.88
  5. Step 5: Solve for x
    x = 149,502,968.88/14,628.40
  6. Step 6: Final answer
    x = 10,220.05

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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.