Home / 30,917.96-42,666.50-16,770.76

Finding the Fourth Proportional to 30,917.96, 42,666.50 and 16,770.76

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Solution

The fourth proportional to 30,917.96, 42,666.50 and 16,770.76 is: 23,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,917.96 : 42,666.50 = 16,770.76 : x
  2. Step 2: Convert to fraction form
    30,917.96/42,666.50 = 16,770.76/x
  3. Step 3: Cross multiply
    30,917.96x = 42,666.50 × 16,770.76
  4. Step 4: Simplify right side
    30,917.96x = 715,549,631.54
  5. Step 5: Solve for x
    x = 715,549,631.54/30,917.96
  6. Step 6: Final answer
    x = 23,143.49

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Double scale
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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.