Home / 30,819.14-42,530.40-16,671.96

Finding the Fourth Proportional to 30,819.14, 42,530.40 and 16,671.96

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Solution

The fourth proportional to 30,819.14, 42,530.40 and 16,671.96 is: 23,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.14 : 42,530.40 = 16,671.96 : x
  2. Step 2: Convert to fraction form
    30,819.14/42,530.40 = 16,671.96/x
  3. Step 3: Cross multiply
    30,819.14x = 42,530.40 × 16,671.96
  4. Step 4: Simplify right side
    30,819.14x = 709,065,127.58
  5. Step 5: Solve for x
    x = 709,065,127.58/30,819.14
  6. Step 6: Final answer
    x = 23,007.30

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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.