Home / 21,320.22-31,980.39-7,465.98

Finding the Fourth Proportional to 21,320.22, 31,980.39 and 7,465.98

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Solution

The fourth proportional to 21,320.22, 31,980.39 and 7,465.98 is: 11,198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.22 : 31,980.39 = 7,465.98 : x
  2. Step 2: Convert to fraction form
    21,320.22/31,980.39 = 7,465.98/x
  3. Step 3: Cross multiply
    21,320.22x = 31,980.39 × 7,465.98
  4. Step 4: Simplify right side
    21,320.22x = 238,764,952.13
  5. Step 5: Solve for x
    x = 238,764,952.13/21,320.22
  6. Step 6: Final answer
    x = 11,198.99

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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.