Home / 20,309.34-30,455.91-7,822.38

Finding the Fourth Proportional to 20,309.34, 30,455.91 and 7,822.38

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Solution

The fourth proportional to 20,309.34, 30,455.91 and 7,822.38 is: 11,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.34 : 30,455.91 = 7,822.38 : x
  2. Step 2: Convert to fraction form
    20,309.34/30,455.91 = 7,822.38/x
  3. Step 3: Cross multiply
    20,309.34x = 30,455.91 × 7,822.38
  4. Step 4: Simplify right side
    20,309.34x = 238,237,701.27
  5. Step 5: Solve for x
    x = 238,237,701.27/20,309.34
  6. Step 6: Final answer
    x = 11,730.45

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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.