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Finding the Fourth Proportional to 30,000.70, 41,400.21 and 16,570.90

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Solution

The fourth proportional to 30,000.70, 41,400.21 and 16,570.90 is: 22,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.70 : 41,400.21 = 16,570.90 : x
  2. Step 2: Convert to fraction form
    30,000.70/41,400.21 = 16,570.90/x
  3. Step 3: Cross multiply
    30,000.70x = 41,400.21 × 16,570.90
  4. Step 4: Simplify right side
    30,000.70x = 686,038,739.89
  5. Step 5: Solve for x
    x = 686,038,739.89/30,000.70
  6. Step 6: Final answer
    x = 22,867.42

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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.