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Finding the Fourth Proportional to 30,687.80, 46,031.70 and 16,924.28

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Solution

The fourth proportional to 30,687.80, 46,031.70 and 16,924.28 is: 25,386.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.80 : 46,031.70 = 16,924.28 : x
  2. Step 2: Convert to fraction form
    30,687.80/46,031.70 = 16,924.28/x
  3. Step 3: Cross multiply
    30,687.80x = 46,031.70 × 16,924.28
  4. Step 4: Simplify right side
    30,687.80x = 779,053,379.68
  5. Step 5: Solve for x
    x = 779,053,379.68/30,687.80
  6. Step 6: Final answer
    x = 25,386.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.