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Finding the Fourth Proportional to 20,253.30, 30,384.84 and 7,603.17

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Solution

The fourth proportional to 20,253.30, 30,384.84 and 7,603.17 is: 11,406.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.30 : 30,384.84 = 7,603.17 : x
  2. Step 2: Convert to fraction form
    20,253.30/30,384.84 = 7,603.17/x
  3. Step 3: Cross multiply
    20,253.30x = 30,384.84 × 7,603.17
  4. Step 4: Simplify right side
    20,253.30x = 231,021,018.51
  5. Step 5: Solve for x
    x = 231,021,018.51/20,253.30
  6. Step 6: Final answer
    x = 11,406.59

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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.