Home / 21,317.28-31,980.84-6,528.36

Finding the Fourth Proportional to 21,317.28, 31,980.84 and 6,528.36

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Solution

The fourth proportional to 21,317.28, 31,980.84 and 6,528.36 is: 9,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.28 : 31,980.84 = 6,528.36 : x
  2. Step 2: Convert to fraction form
    21,317.28/31,980.84 = 6,528.36/x
  3. Step 3: Cross multiply
    21,317.28x = 31,980.84 × 6,528.36
  4. Step 4: Simplify right side
    21,317.28x = 208,782,436.62
  5. Step 5: Solve for x
    x = 208,782,436.62/21,317.28
  6. Step 6: Final answer
    x = 9,794.05

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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.