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Finding the Fourth Proportional to 11,889.48, 17,854.47 and 9,913.08

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Solution

The fourth proportional to 11,889.48, 17,854.47 and 9,913.08 is: 14,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889.48 : 17,854.47 = 9,913.08 : x
  2. Step 2: Convert to fraction form
    11,889.48/17,854.47 = 9,913.08/x
  3. Step 3: Cross multiply
    11,889.48x = 17,854.47 × 9,913.08
  4. Step 4: Simplify right side
    11,889.48x = 176,992,789.47
  5. Step 5: Solve for x
    x = 176,992,789.47/11,889.48
  6. Step 6: Final answer
    x = 14,886.50

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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.