Home / 13,440.03-20,152.62-6,421.80

Finding the Fourth Proportional to 13,440.03, 20,152.62 and 6,421.80

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Solution

The fourth proportional to 13,440.03, 20,152.62 and 6,421.80 is: 9,629.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.03 : 20,152.62 = 6,421.80 : x
  2. Step 2: Convert to fraction form
    13,440.03/20,152.62 = 6,421.80/x
  3. Step 3: Cross multiply
    13,440.03x = 20,152.62 × 6,421.80
  4. Step 4: Simplify right side
    13,440.03x = 129,416,095.12
  5. Step 5: Solve for x
    x = 129,416,095.12/13,440.03
  6. Step 6: Final answer
    x = 9,629.15

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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.