Home / 30,578.20-45,845.70-13,946.20

Finding the Fourth Proportional to 30,578.20, 45,845.70 and 13,946.20

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Solution

The fourth proportional to 30,578.20, 45,845.70 and 13,946.20 is: 20,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,578.20 : 45,845.70 = 13,946.20 : x
  2. Step 2: Convert to fraction form
    30,578.20/45,845.70 = 13,946.20/x
  3. Step 3: Cross multiply
    30,578.20x = 45,845.70 × 13,946.20
  4. Step 4: Simplify right side
    30,578.20x = 639,373,301.34
  5. Step 5: Solve for x
    x = 639,373,301.34/30,578.20
  6. Step 6: Final answer
    x = 20,909.45

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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.