Home / 21,131.84-31,695.86-6,344.06

Finding the Fourth Proportional to 21,131.84, 31,695.86 and 6,344.06

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Solution

The fourth proportional to 21,131.84, 31,695.86 and 6,344.06 is: 9,515.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.84 : 31,695.86 = 6,344.06 : x
  2. Step 2: Convert to fraction form
    21,131.84/31,695.86 = 6,344.06/x
  3. Step 3: Cross multiply
    21,131.84x = 31,695.86 × 6,344.06
  4. Step 4: Simplify right side
    21,131.84x = 201,080,437.59
  5. Step 5: Solve for x
    x = 201,080,437.59/21,131.84
  6. Step 6: Final answer
    x = 9,515.52

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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.