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Finding the Fourth Proportional to 30,759, 42,447.43 and 16,611.85

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Solution

The fourth proportional to 30,759, 42,447.43 and 16,611.85 is: 22,924.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,759 : 42,447.43 = 16,611.85 : x
  2. Step 2: Convert to fraction form
    30,759/42,447.43 = 16,611.85/x
  3. Step 3: Cross multiply
    30,759x = 42,447.43 × 16,611.85
  4. Step 4: Simplify right side
    30,759x = 705,130,192.40
  5. Step 5: Solve for x
    x = 705,130,192.40/30,759
  6. Step 6: Final answer
    x = 22,924.35

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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.