Home / 30,670.40-45,981.30-16,819.40

Finding the Fourth Proportional to 30,670.40, 45,981.30 and 16,819.40

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Solution

The fourth proportional to 30,670.40, 45,981.30 and 16,819.40 is: 25,215.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,670.40 : 45,981.30 = 16,819.40 : x
  2. Step 2: Convert to fraction form
    30,670.40/45,981.30 = 16,819.40/x
  3. Step 3: Cross multiply
    30,670.40x = 45,981.30 × 16,819.40
  4. Step 4: Simplify right side
    30,670.40x = 773,377,877.22
  5. Step 5: Solve for x
    x = 773,377,877.22/30,670.40
  6. Step 6: Final answer
    x = 25,215.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.