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Finding the Fourth Proportional to 15,648.63, 21,595.21 and 8,575.31

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Solution

The fourth proportional to 15,648.63, 21,595.21 and 8,575.31 is: 11,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.63 : 21,595.21 = 8,575.31 : x
  2. Step 2: Convert to fraction form
    15,648.63/21,595.21 = 8,575.31/x
  3. Step 3: Cross multiply
    15,648.63x = 21,595.21 × 8,575.31
  4. Step 4: Simplify right side
    15,648.63x = 185,185,512.29
  5. Step 5: Solve for x
    x = 185,185,512.29/15,648.63
  6. Step 6: Final answer
    x = 11,833.98

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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.