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Finding the Fourth Proportional to 19,956.78, 29,927.88 and 5,913

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Solution

The fourth proportional to 19,956.78, 29,927.88 and 5,913 is: 8,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.78 : 29,927.88 = 5,913 : x
  2. Step 2: Convert to fraction form
    19,956.78/29,927.88 = 5,913/x
  3. Step 3: Cross multiply
    19,956.78x = 29,927.88 × 5,913
  4. Step 4: Simplify right side
    19,956.78x = 176,963,554.44
  5. Step 5: Solve for x
    x = 176,963,554.44/19,956.78
  6. Step 6: Final answer
    x = 8,867.34

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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.