Home / 30,813.84-42,523.44-16,666.92

Finding the Fourth Proportional to 30,813.84, 42,523.44 and 16,666.92

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Solution

The fourth proportional to 30,813.84, 42,523.44 and 16,666.92 is: 23,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.84 : 42,523.44 = 16,666.92 : x
  2. Step 2: Convert to fraction form
    30,813.84/42,523.44 = 16,666.92/x
  3. Step 3: Cross multiply
    30,813.84x = 42,523.44 × 16,666.92
  4. Step 4: Simplify right side
    30,813.84x = 708,734,772.60
  5. Step 5: Solve for x
    x = 708,734,772.60/30,813.84
  6. Step 6: Final answer
    x = 23,000.53

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Half scale
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Double scale
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Similar ratio
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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.