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Finding the Fourth Proportional to 15,658.63, 21,608.13 and 8,852.47

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Solution

The fourth proportional to 15,658.63, 21,608.13 and 8,852.47 is: 12,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658.63 : 21,608.13 = 8,852.47 : x
  2. Step 2: Convert to fraction form
    15,658.63/21,608.13 = 8,852.47/x
  3. Step 3: Cross multiply
    15,658.63x = 21,608.13 × 8,852.47
  4. Step 4: Simplify right side
    15,658.63x = 191,285,322.58
  5. Step 5: Solve for x
    x = 191,285,322.58/15,658.63
  6. Step 6: Final answer
    x = 12,215.97

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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.