Home / 30,981.60-42,754.50-16,834.14

Finding the Fourth Proportional to 30,981.60, 42,754.50 and 16,834.14

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Solution

The fourth proportional to 30,981.60, 42,754.50 and 16,834.14 is: 23,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.60 : 42,754.50 = 16,834.14 : x
  2. Step 2: Convert to fraction form
    30,981.60/42,754.50 = 16,834.14/x
  3. Step 3: Cross multiply
    30,981.60x = 42,754.50 × 16,834.14
  4. Step 4: Simplify right side
    30,981.60x = 719,735,238.63
  5. Step 5: Solve for x
    x = 719,735,238.63/30,981.60
  6. Step 6: Final answer
    x = 23,231.05

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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.