Home / 14,225.40-21,338.10-4,990.20

Finding the Fourth Proportional to 14,225.40, 21,338.10 and 4,990.20

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Solution

The fourth proportional to 14,225.40, 21,338.10 and 4,990.20 is: 7,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,225.40 : 21,338.10 = 4,990.20 : x
  2. Step 2: Convert to fraction form
    14,225.40/21,338.10 = 4,990.20/x
  3. Step 3: Cross multiply
    14,225.40x = 21,338.10 × 4,990.20
  4. Step 4: Simplify right side
    14,225.40x = 106,481,386.62
  5. Step 5: Solve for x
    x = 106,481,386.62/14,225.40
  6. Step 6: Final answer
    x = 7,485.30

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Similar ratio
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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.