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Finding the Fourth Proportional to 15,296.81, 21,109.91 and 8,582.92

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Solution

The fourth proportional to 15,296.81, 21,109.91 and 8,582.92 is: 11,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.81 : 21,109.91 = 8,582.92 : x
  2. Step 2: Convert to fraction form
    15,296.81/21,109.91 = 8,582.92/x
  3. Step 3: Cross multiply
    15,296.81x = 21,109.91 × 8,582.92
  4. Step 4: Simplify right side
    15,296.81x = 181,184,637.42
  5. Step 5: Solve for x
    x = 181,184,637.42/15,296.81
  6. Step 6: Final answer
    x = 11,844.61

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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.