Home / 13,330.70-19,996.05-7,790.30

Finding the Fourth Proportional to 13,330.70, 19,996.05 and 7,790.30

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Solution

The fourth proportional to 13,330.70, 19,996.05 and 7,790.30 is: 11,685.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.70 : 19,996.05 = 7,790.30 : x
  2. Step 2: Convert to fraction form
    13,330.70/19,996.05 = 7,790.30/x
  3. Step 3: Cross multiply
    13,330.70x = 19,996.05 × 7,790.30
  4. Step 4: Simplify right side
    13,330.70x = 155,775,228.32
  5. Step 5: Solve for x
    x = 155,775,228.32/13,330.70
  6. Step 6: Final answer
    x = 11,685.45

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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.