Home / 13,379.04-20,066.40-4,147.20

Finding the Fourth Proportional to 13,379.04, 20,066.40 and 4,147.20

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Solution

The fourth proportional to 13,379.04, 20,066.40 and 4,147.20 is: 6,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.04 : 20,066.40 = 4,147.20 : x
  2. Step 2: Convert to fraction form
    13,379.04/20,066.40 = 4,147.20/x
  3. Step 3: Cross multiply
    13,379.04x = 20,066.40 × 4,147.20
  4. Step 4: Simplify right side
    13,379.04x = 83,219,374.08
  5. Step 5: Solve for x
    x = 83,219,374.08/13,379.04
  6. Step 6: Final answer
    x = 6,220.13

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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.