Home / 13,612.08-20,421.72-7,369.32

Finding the Fourth Proportional to 13,612.08, 20,421.72 and 7,369.32

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Solution

The fourth proportional to 13,612.08, 20,421.72 and 7,369.32 is: 11,055.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.08 : 20,421.72 = 7,369.32 : x
  2. Step 2: Convert to fraction form
    13,612.08/20,421.72 = 7,369.32/x
  3. Step 3: Cross multiply
    13,612.08x = 20,421.72 × 7,369.32
  4. Step 4: Simplify right side
    13,612.08x = 150,494,189.63
  5. Step 5: Solve for x
    x = 150,494,189.63/13,612.08
  6. Step 6: Final answer
    x = 11,055.93

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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.