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Finding the Fourth Proportional to 30,835.04, 42,552.48 and 16,687.88

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Solution

The fourth proportional to 30,835.04, 42,552.48 and 16,687.88 is: 23,029.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,835.04 : 42,552.48 = 16,687.88 : x
  2. Step 2: Convert to fraction form
    30,835.04/42,552.48 = 16,687.88/x
  3. Step 3: Cross multiply
    30,835.04x = 42,552.48 × 16,687.88
  4. Step 4: Simplify right side
    30,835.04x = 710,110,679.94
  5. Step 5: Solve for x
    x = 710,110,679.94/30,835.04
  6. Step 6: Final answer
    x = 23,029.34

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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.