Home / 30,976.86-42,748.20-16,829.76

Finding the Fourth Proportional to 30,976.86, 42,748.20 and 16,829.76

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Solution

The fourth proportional to 30,976.86, 42,748.20 and 16,829.76 is: 23,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,976.86 : 42,748.20 = 16,829.76 : x
  2. Step 2: Convert to fraction form
    30,976.86/42,748.20 = 16,829.76/x
  3. Step 3: Cross multiply
    30,976.86x = 42,748.20 × 16,829.76
  4. Step 4: Simplify right side
    30,976.86x = 719,441,946.43
  5. Step 5: Solve for x
    x = 719,441,946.43/30,976.86
  6. Step 6: Final answer
    x = 23,225.14

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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.