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Finding the Fourth Proportional to 18,509.58, 27,772.47 and 11,948.58

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Solution

The fourth proportional to 18,509.58, 27,772.47 and 11,948.58 is: 17,928.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.58 : 27,772.47 = 11,948.58 : x
  2. Step 2: Convert to fraction form
    18,509.58/27,772.47 = 11,948.58/x
  3. Step 3: Cross multiply
    18,509.58x = 27,772.47 × 11,948.58
  4. Step 4: Simplify right side
    18,509.58x = 331,841,579.59
  5. Step 5: Solve for x
    x = 331,841,579.59/18,509.58
  6. Step 6: Final answer
    x = 17,928.10

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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.