Home / 21,325.56-31,991.93-6,530.91

Finding the Fourth Proportional to 21,325.56, 31,991.93 and 6,530.91

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Solution

The fourth proportional to 21,325.56, 31,991.93 and 6,530.91 is: 9,797.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.56 : 31,991.93 = 6,530.91 : x
  2. Step 2: Convert to fraction form
    21,325.56/31,991.93 = 6,530.91/x
  3. Step 3: Cross multiply
    21,325.56x = 31,991.93 × 6,530.91
  4. Step 4: Simplify right side
    21,325.56x = 208,936,382.90
  5. Step 5: Solve for x
    x = 208,936,382.90/21,325.56
  6. Step 6: Final answer
    x = 9,797.46

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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.