Home / 20,955.20-31,396.32-17,487.68

Finding the Fourth Proportional to 20,955.20, 31,396.32 and 17,487.68

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Solution

The fourth proportional to 20,955.20, 31,396.32 and 17,487.68 is: 26,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.20 : 31,396.32 = 17,487.68 : x
  2. Step 2: Convert to fraction form
    20,955.20/31,396.32 = 17,487.68/x
  3. Step 3: Cross multiply
    20,955.20x = 31,396.32 × 17,487.68
  4. Step 4: Simplify right side
    20,955.20x = 549,048,797.34
  5. Step 5: Solve for x
    x = 549,048,797.34/20,955.20
  6. Step 6: Final answer
    x = 26,201.08

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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.