Home / 30,503.54-45,680.79-18,800.66

Finding the Fourth Proportional to 30,503.54, 45,680.79 and 18,800.66

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Solution

The fourth proportional to 30,503.54, 45,680.79 and 18,800.66 is: 28,155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.54 : 45,680.79 = 18,800.66 : x
  2. Step 2: Convert to fraction form
    30,503.54/45,680.79 = 18,800.66/x
  3. Step 3: Cross multiply
    30,503.54x = 45,680.79 × 18,800.66
  4. Step 4: Simplify right side
    30,503.54x = 858,829,001.32
  5. Step 5: Solve for x
    x = 858,829,001.32/30,503.54
  6. Step 6: Final answer
    x = 28,155.06

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1.5x scale

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.