Home / 20,235.18-30,349.08-5,440.64

Finding the Fourth Proportional to 20,235.18, 30,349.08 and 5,440.64

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Solution

The fourth proportional to 20,235.18, 30,349.08 and 5,440.64 is: 8,159.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.18 : 30,349.08 = 5,440.64 : x
  2. Step 2: Convert to fraction form
    20,235.18/30,349.08 = 5,440.64/x
  3. Step 3: Cross multiply
    20,235.18x = 30,349.08 × 5,440.64
  4. Step 4: Simplify right side
    20,235.18x = 165,118,266.87
  5. Step 5: Solve for x
    x = 165,118,266.87/20,235.18
  6. Step 6: Final answer
    x = 8,159.96

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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.