Home / 13,487.30-20,230.84-4,127.28

Finding the Fourth Proportional to 13,487.30, 20,230.84 and 4,127.28

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Solution

The fourth proportional to 13,487.30, 20,230.84 and 4,127.28 is: 6,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.30 : 20,230.84 = 4,127.28 : x
  2. Step 2: Convert to fraction form
    13,487.30/20,230.84 = 4,127.28/x
  3. Step 3: Cross multiply
    13,487.30x = 20,230.84 × 4,127.28
  4. Step 4: Simplify right side
    13,487.30x = 83,498,341.32
  5. Step 5: Solve for x
    x = 83,498,341.32/13,487.30
  6. Step 6: Final answer
    x = 6,190.89

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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.