Home / 30,486.99-42,070.37-16,874.45

Finding the Fourth Proportional to 30,486.99, 42,070.37 and 16,874.45

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Solution

The fourth proportional to 30,486.99, 42,070.37 and 16,874.45 is: 23,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,486.99 : 42,070.37 = 16,874.45 : x
  2. Step 2: Convert to fraction form
    30,486.99/42,070.37 = 16,874.45/x
  3. Step 3: Cross multiply
    30,486.99x = 42,070.37 × 16,874.45
  4. Step 4: Simplify right side
    30,486.99x = 709,914,355.05
  5. Step 5: Solve for x
    x = 709,914,355.05/30,486.99
  6. Step 6: Final answer
    x = 23,285.81

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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.