Home / 20,795.28-31,173.84-7,637.64

Finding the Fourth Proportional to 20,795.28, 31,173.84 and 7,637.64

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Solution

The fourth proportional to 20,795.28, 31,173.84 and 7,637.64 is: 11,449.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.28 : 31,173.84 = 7,637.64 : x
  2. Step 2: Convert to fraction form
    20,795.28/31,173.84 = 7,637.64/x
  3. Step 3: Cross multiply
    20,795.28x = 31,173.84 × 7,637.64
  4. Step 4: Simplify right side
    20,795.28x = 238,094,567.34
  5. Step 5: Solve for x
    x = 238,094,567.34/20,795.28
  6. Step 6: Final answer
    x = 11,449.45

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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.