Home / 20,798.85-31,203.75-7,473.20

Finding the Fourth Proportional to 20,798.85, 31,203.75 and 7,473.20

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Solution

The fourth proportional to 20,798.85, 31,203.75 and 7,473.20 is: 11,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.85 : 31,203.75 = 7,473.20 : x
  2. Step 2: Convert to fraction form
    20,798.85/31,203.75 = 7,473.20/x
  3. Step 3: Cross multiply
    20,798.85x = 31,203.75 × 7,473.20
  4. Step 4: Simplify right side
    20,798.85x = 233,191,736.51
  5. Step 5: Solve for x
    x = 233,191,736.51/20,798.85
  6. Step 6: Final answer
    x = 11,211.76

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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.