Home / 13,430.16-20,143.44-3,570.21

Finding the Fourth Proportional to 13,430.16, 20,143.44 and 3,570.21

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Solution

The fourth proportional to 13,430.16, 20,143.44 and 3,570.21 is: 5,354.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.16 : 20,143.44 = 3,570.21 : x
  2. Step 2: Convert to fraction form
    13,430.16/20,143.44 = 3,570.21/x
  3. Step 3: Cross multiply
    13,430.16x = 20,143.44 × 3,570.21
  4. Step 4: Simplify right side
    13,430.16x = 71,916,310.92
  5. Step 5: Solve for x
    x = 71,916,310.92/13,430.16
  6. Step 6: Final answer
    x = 5,354.84

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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.