Home / 20,448.56-30,678.48-7,302.20

Finding the Fourth Proportional to 20,448.56, 30,678.48 and 7,302.20

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Solution

The fourth proportional to 20,448.56, 30,678.48 and 7,302.20 is: 10,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.56 : 30,678.48 = 7,302.20 : x
  2. Step 2: Convert to fraction form
    20,448.56/30,678.48 = 7,302.20/x
  3. Step 3: Cross multiply
    20,448.56x = 30,678.48 × 7,302.20
  4. Step 4: Simplify right side
    20,448.56x = 224,020,396.66
  5. Step 5: Solve for x
    x = 224,020,396.66/20,448.56
  6. Step 6: Final answer
    x = 10,955.31

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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.