Home / 21,320.64-31,980.42-6,528.96

Finding the Fourth Proportional to 21,320.64, 31,980.42 and 6,528.96

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Solution

The fourth proportional to 21,320.64, 31,980.42 and 6,528.96 is: 9,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.64 : 31,980.42 = 6,528.96 : x
  2. Step 2: Convert to fraction form
    21,320.64/31,980.42 = 6,528.96/x
  3. Step 3: Cross multiply
    21,320.64x = 31,980.42 × 6,528.96
  4. Step 4: Simplify right side
    21,320.64x = 208,798,882.96
  5. Step 5: Solve for x
    x = 208,798,882.96/21,320.64
  6. Step 6: Final answer
    x = 9,793.27

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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.