Home / 21,296.39-31,941.81-6,506.78

Finding the Fourth Proportional to 21,296.39, 31,941.81 and 6,506.78

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Solution

The fourth proportional to 21,296.39, 31,941.81 and 6,506.78 is: 9,759.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.39 : 31,941.81 = 6,506.78 : x
  2. Step 2: Convert to fraction form
    21,296.39/31,941.81 = 6,506.78/x
  3. Step 3: Cross multiply
    21,296.39x = 31,941.81 × 6,506.78
  4. Step 4: Simplify right side
    21,296.39x = 207,838,170.76
  5. Step 5: Solve for x
    x = 207,838,170.76/21,296.39
  6. Step 6: Final answer
    x = 9,759.32

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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.