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Finding the Fourth Proportional to 20,259.94, 27,956.21 and 11,307.94

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Solution

The fourth proportional to 20,259.94, 27,956.21 and 11,307.94 is: 15,603.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.94 : 27,956.21 = 11,307.94 : x
  2. Step 2: Convert to fraction form
    20,259.94/27,956.21 = 11,307.94/x
  3. Step 3: Cross multiply
    20,259.94x = 27,956.21 × 11,307.94
  4. Step 4: Simplify right side
    20,259.94x = 316,127,145.31
  5. Step 5: Solve for x
    x = 316,127,145.31/20,259.94
  6. Step 6: Final answer
    x = 15,603.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.