Home / 21,330.36-31,996.44-6,539.40

Finding the Fourth Proportional to 21,330.36, 31,996.44 and 6,539.40

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Solution

The fourth proportional to 21,330.36, 31,996.44 and 6,539.40 is: 9,809.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.36 : 31,996.44 = 6,539.40 : x
  2. Step 2: Convert to fraction form
    21,330.36/31,996.44 = 6,539.40/x
  3. Step 3: Cross multiply
    21,330.36x = 31,996.44 × 6,539.40
  4. Step 4: Simplify right side
    21,330.36x = 209,237,519.74
  5. Step 5: Solve for x
    x = 209,237,519.74/21,330.36
  6. Step 6: Final answer
    x = 9,809.38

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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.