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Finding the Fourth Proportional to 18,339.58, 25,308.64 and 9,956.08

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Solution

The fourth proportional to 18,339.58, 25,308.64 and 9,956.08 is: 13,739.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.58 : 25,308.64 = 9,956.08 : x
  2. Step 2: Convert to fraction form
    18,339.58/25,308.64 = 9,956.08/x
  3. Step 3: Cross multiply
    18,339.58x = 25,308.64 × 9,956.08
  4. Step 4: Simplify right side
    18,339.58x = 251,974,844.53
  5. Step 5: Solve for x
    x = 251,974,844.53/18,339.58
  6. Step 6: Final answer
    x = 13,739.40

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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.