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Finding the Fourth Proportional to 15,632.72, 21,573.08 and 8,559.08

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Solution

The fourth proportional to 15,632.72, 21,573.08 and 8,559.08 is: 11,811.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,632.72 : 21,573.08 = 8,559.08 : x
  2. Step 2: Convert to fraction form
    15,632.72/21,573.08 = 8,559.08/x
  3. Step 3: Cross multiply
    15,632.72x = 21,573.08 × 8,559.08
  4. Step 4: Simplify right side
    15,632.72x = 184,645,717.57
  5. Step 5: Solve for x
    x = 184,645,717.57/15,632.72
  6. Step 6: Final answer
    x = 11,811.49

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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.