Home / 30,982.86-42,756.60-16,835.70

Finding the Fourth Proportional to 30,982.86, 42,756.60 and 16,835.70

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Solution

The fourth proportional to 30,982.86, 42,756.60 and 16,835.70 is: 23,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982.86 : 42,756.60 = 16,835.70 : x
  2. Step 2: Convert to fraction form
    30,982.86/42,756.60 = 16,835.70/x
  3. Step 3: Cross multiply
    30,982.86x = 42,756.60 × 16,835.70
  4. Step 4: Simplify right side
    30,982.86x = 719,837,290.62
  5. Step 5: Solve for x
    x = 719,837,290.62/30,982.86
  6. Step 6: Final answer
    x = 23,233.40

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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.