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Finding the Fourth Proportional to 19,455.78, 26,848.88 and 10,957.88

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Solution

The fourth proportional to 19,455.78, 26,848.88 and 10,957.88 is: 15,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,455.78 : 26,848.88 = 10,957.88 : x
  2. Step 2: Convert to fraction form
    19,455.78/26,848.88 = 10,957.88/x
  3. Step 3: Cross multiply
    19,455.78x = 26,848.88 × 10,957.88
  4. Step 4: Simplify right side
    19,455.78x = 294,206,805.17
  5. Step 5: Solve for x
    x = 294,206,805.17/19,455.78
  6. Step 6: Final answer
    x = 15,121.82

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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.